View source for Post-Covenant War conflicts

{{Status|Canon}}
{{Conjectural title}}

Following the [[Battle of the Citadel|end]] of the [[Human-Covenant War]] in [[2552#December|2552]], a number of smaller conflicts and tensions arose: this cold time period was referred to as the '''post-Covenant War era''',{{Ref/Novel|Ren|Section=back cover|Quote=Find. Claim. Profit. In a post-Covenant War galaxy littered with scrap, it's the salvager's motto...}} (shortened '''post-war era'''),{{Ref/Novel|Id=SmokeAndShadow|SaS|Section=back cover|Quote=In a post-war galaxy littered with scrap...}} the '''postwar''',{{Ref/Book|Enc22|Page=73}}{{Ref/Book|Enc22|Page=100}}{{Ref/Book|Enc22|Page=224}} or infrequently as the '''Treaty period'''.{{Ref/Site|Id=waypoint enc|URL=https://www.halowaypoint.com/en-us/universe/characters/axl|Site=Halo Waypoint|Page=Axl|D=06|M=09|Y=2015}}

The [[Unified Earth Government]] and its [[United Nations Space Command]] had emerged as a major superpower following the end of the war.{{Ref/Game|H4|Quote=For too many years, humanity was on the backfront, reacting to threats rather than preventing them. The rest of the galaxy was bigger than us, stronger than us. We were mice, hiding in the shadows, hoping the giants would not see us. No more. Humanity is no longer on the defence. We are the giants now. - [[Captain (NAVCOM)|Captain]] [[Thomas Lasky]]}} They maintained their [[Treaty of 2552|alliance]] with the [[Swords of Sanghelios]] led by [[Arbiter]] [[Thel 'Vadam]] and both groups occasionally engaged in irregular hostilities between several new [[Covenant remnants|remnant factions]] of the former [[Covenant]], most notably the smaller [[Jul 'Mdama's Covenant|new "Covenant"]] led by [[Jul 'Mdama]].{{Ref/Site|Id=InitiationInterview|URL=http://blogs.halowaypoint.com/Headlines/post/2013/06/03/Halo-Initiation-Writer-Interview.aspx|Site=Halo Waypoint|Page=Halo Initiation Writer Interview|D=13|M=7|Y=2013}} Various human [[Insurrectionist]] groups, many of which had been dormant during the Human-Covenant War, re-emerged in the post-war era, the most prominent of these being the [[New Colonial Alliance]]{{Ref/Comic|Id=HE5|HE||Issue=5}} and the [[United Rebel Front]],{{Ref/Reuse|hnb}} but also various independent colonial governments seeking to cut ties with the UEG.{{Ref/Novel|LL}} Additionally, the [[Sangheili]] were embroiled in a [[Blooding Years|civil war]] for several years, while many members of the species continued their earlier [[Sangheili-Jiralhanae war|feud]] with the [[Jiralhanae]], whose various packs and skiens also remained locked in irregular infighting.{{Ref/Novel|Id=HTTW|TTW}} By the year [[2559]], the [[Intergalactic space|extragalactic]] installation known as [[Installation 00|the Ark]] was embroiled in an isolated yet [[Second Ark Conflict|protracted battle]] between the mercenary group known as the [[Banished]] and the UNSC forces of the long-lost warship {{UNSCShip|Spirit of Fire}}. Conflicts in the post-war era also saw an increase in the involvement of [[Forerunner]] elements, starting with the awakening of [[Promethean]] forces led by the renegade [[Ur-Didact]] who [[New Phoenix Incident|briefly attacked Earth]] in [[2557]]. By the [[2558|following year]], the Promethean constructs fell under the banner of the [[Created]], a newly-emerged group bent on galactic domination led by [[Cortana]] and the [[Warden Eternal]].{{Ref/Game|Id=h5g|H5}} This lead to the [[Subjugation of Earth]], humanity's first major setback since the end of the war, and the start of the [[Created conflict]].

==Background==
{{Quote|Decades from now, when historians evaluate the war, what will they say about us? Will they claim that our victory was ultimately fruitless? That it failed to secure a lasting peace, or worse, that it was only a prelude to far greater horrors that now lay ahead?|[[Codename: SURGEON]] prefacing the first [[Eleventh Hour reports|Eleventh Hour report]]{{Ref/Generic|Heading=[[Eleventh Hour reports]]|Detail=Aftermath (1/5)}}}}
[[File:Commissioning-5.jpg|thumb|250px|The commissioning of {{UNSCShip|Infinity}}.]]

Although the death of the [[Prophet of Truth]] at [[Battle of Installation 00|the Ark]] during the endgame of the Covenant War saw the ultimate defeat of the Covenant and humanity's [[Treaty of 2552|truce]] with most [[Sangheili]], represented by the [[Swords of Sanghelios]], it was not long after the end of the war that [[Covenant remnants|rogue splinter groups]] began to rise from the remnants of the hegemony. With large amounts of former Covenant matériel at their disposal, many of these disparate remnants opposed both the UNSC and the former members of the Covenant who favored a policy of peaceful cooperation, an approach most visibly embodied by [[Arbiter]] [[Thel 'Vadam]]. The UNSC's aggressive rearmament (largely made possible by the acquisition of Forerunner technologies and exemplified by the colossal warship {{UNSCShip|Infinity}} as well as the rapid creation of hundreds of [[SPARTAN-IV program|new Spartan supersoldiers]]) combined with the [[Office of Naval Intelligence]]'s shortsighted approach to neutralize their former enemies, did little to ease the concerns of more hostile elements within Sangheili society.

While [[Sanghelios]] remained locked in a state of [[Blooding Years|civil war]] between various factions, in part due to the [[Kilo-Five|clandestine activities]] of the Office of Naval Intelligence, a former Sangheili [[Shipmaster]] known as [[Jul 'Mdama]] created his own [[Jul 'Mdama's Covenant|new "Covenant"]]. During his time in ONI captivity on [[Sarcophagus|ONIRF Trevelyan]], 'Mdama had learned that the [[Ur-Didact|Didact]], a mighty Forerunner general with a hatred for humans, was trapped inside a Forerunner shield world known as [[Requiem]]. After escaping Trevelyan, 'Mdama began to gather followers in order to travel to Requiem and unlock the world's secrets, intending to use the Didact as a motivating force for his followers, but also a new spiritual voice for his people and a chance to exact vengeance on humanity.{{Ref/Novel|TTW|Page=441-442}} Former Covenant factions also sought vengeance upon each other for the atrocities committed during the [[Great Schism]], [[Resa 'Azavayl]] led [[Silent Shadow|Sangheili forces]] to commit massacres against the Jiralhanae,{{Ref/Comic|Id=HP|TFS|Story=Hunting Party}} while the [[San'Shyuum]] [[Prelate]] [[Tem'Bhetek]] led [[Tem'Bhetek's faction|Jiralhanae forces]] to commit massacres against the Sangheili.{{Ref/Novel|Id=SoI|SoI}}

Humanity found itself facing renewed internecine struggle as well. While the [[Insurrection]] had ceased as a major conflict at the start of the Covenant War in [[2525]], some surviving [[Human colonies|colonies]] still harbored former [[Insurrectionist]]s as well as individuals sympathetic to the cause of colonial secession.{{Ref/Comic|Id=HII3|HInit|Issue=3}} Some colonies, including [[Venezia]], cut off all ties with the UEG under the pretense that Earth had abandoned them during the war.{{Ref/Novel|Gla|Page=70}} Some rebel groups managed to obtain large amounts of Covenant and UNSC weapons and equipment circulating on the [[black market]].{{Ref/Novel|Gla|Page=448}}

In [[2559]], the [[Banished]] [[Attack on Installation 00|invaded]] [[Installation 00|the Ark]] which became the site of [[Second Ark Conflict|a protracted conflict]] between first Banished forces and forces from the long-lost {{UNSCShip|Spirit of Fire}}.{{Ref/Game|HW2}} However, this conflict would later expand to include the [[Flood]],{{Ref/Game|Id=Nightmare|HW2|Detail=''[[Halo Wars 2: Awakening the Nightmare|Awakening the Nightmare]]''}}, surviving [[Dhas Bhasvod's Covenant]]{{Ref/Reuse|Sacrifice}} and the [[Keepers of the One Freedom]] as well as the Forerunner [[archeon-class ancilla]] [[Intrepid Eye]].{{Ref/Reuse|DW}}

By late 2559, under the command of [[High Lord]] [[Dovo Nesto]], the [[Order of Restoration]] amassed a significant amount of power in their goal to restore the fallen Covenant empire. In the years following the fall of the Covenant, Nesto consolidated whatever remained of the San'Shyuum's influence into the Order, along with the majority of the empire's other species. Unlike the warlords of the [[Covenant remnants]], Nesto had the strategic acumen, connections and the history to make it possible.{{Ref/Reuse|ET6}}{{Ref/Reuse|ET11}} Nesto manipulated both [[War Chief]] [[Severan]] of the Banished{{Ref/Reuse|ET12}} and [[Sali 'Nyon]]{{Ref/Reuse|ET10}}{{Ref/Reuse|ET16}} into committing the significant forces under their command to his cause. Although Nesto's alliance with Severan fell apart during the [[Battle of Boundary]],{{Ref/Reuse|ET32}} the death of 'Nyon in the same battle allowed Nesto to assimilate [[Sali 'Nyon's Covenant|'Nyon's Covenant]] and all of its resources into the Order of Restoration to serve the Order's continuing mission to restore the Covenant empire.{{Ref/Reuse|ET47}}
{{Clear}}

==Insurrectionists resurgence==
===Attack on ''Infinity''===
{{Main|Raid on UNSC Infinity}}
[[File:Rebels on the Infinity.png|thumb|250px|left|NCA forces attempt to capture UNSC ''Infinity''.]]
In January 2553, elements of the [[New Colonial Alliance]] led by UNSC defector [[Ilsa Zane]] (the only survivor of the [[SPARTAN-IV program]]'s prototypical stage) infiltrated the {{UNSCShip|Infinity}} disguised as construction personnel and captured most of the bridge crew, using them as hostages. They then secured the ship's bridge in the hope of capturing the prototype UNSC flagship, threatening to vent the ship's atmosphere and kill everyone aboard it.{{Ref/Comic|Id=HII2|HInit|Issue=2}} The attempt was foiled by the first team of SPARTAN-IVs (who had recently been brought aboard) and the insurgents were all killed or captured. The prisoners revealed Admiral [[Mattius Drake]] as the organization's leader.{{Ref/Reuse|HII3}}

===Alpha-Nine's missions===
[[File:HM BetrayalOnTalitsa.jpg|thumb|225px|Spartans Buck and Agu betrayed by Crespo during the Operation: COALPEPPER.]]
{{Main|Draco III rebellion|Operation: COALPEPPER}}
In the post-war era the [[ODST]] squad [[Alpha-Nine]] was deployed on a number of operations against resurgent [[Insurrectionist]] factions. In [[2554]], they were deployed to repulse a violent [[United Rebel Front]] takeover attempt on [[Draco III]]. Although the insurgents were defeated the ODST known as [[Jonathan Doherty]] was killed in action. In the following year the URF captured the [[Huragok]] [[Quick to Adjust]] and his human handler [[Sadie Endesha]] on [[Talitsa]]. In August [[2555]], the still-active members of Alpha-Nine—now [[Spartan-IV]]s—participated in a mission to rescue the captives and ultimately succeeded, though the operation saw Spartan [[Michael Crespo]]'s defection and subsequent incarceration.{{Ref/Novel|Id=hnb|NB}}

===Attack on the Spartan-IV training station===
{{Main|Spartan-IV station terror attack}}
On [[2554|March 29, 2554]], [[Rudolf Schein]], one of the recently inducted Spartan-IVs, who was secretly associated with the [[United Rebel Front]], murdered another Spartan trainee, [[Hideo Wakahisa]], during his attempt to recruit him on the [[Unidentified Spartan-IV training station|Spartan-IV training station]]. Realizing the discovery of his true loyalties was imminent, Schein had covertly installed several explosives throughout the station and slung a bandolier of grenades across his chest. However, Spartan Operations [[Chief of Staff]] [[Jun-A266]] managed to neutralize Schein by kicking him out into space, where he died before he could be recovered.{{Ref/Anthology|Id=LL|Fra|Story=Lessons Learned}}

===Continuing Rebel Activity===
Aside from their attacks on UNSC ''Infinity'', the [[New Colonial Alliance|NCA]] were prolific throughout human space and stirring anti-colonial sentiment in an effort to raise alliances against [[Earth]] and the [[Inner Colonies]]. After the news broke of the [[Raid on Biko peace talks|disastrous outcome]] of the human-[[Sangheili]] peace talks on [[Biko]] in early [[2558]], the NCA were quick to jump on the outrage caused by the apparent assassination of a diplomat by [[John-117]]. This included demonstrations and rallies across a number of colony worlds, with support resulting in thousands of attendees per-rally. The civil unrest sparked by the NCA resulted in UEG consulates shutting down on several worlds and [[law enforcement]] deployed to quell the unrest. In the rallies, NCA spokespeople preached their ideals of self-suffiency, boycotting the UEG, and the need to prepare for an inevitable embargo of their worlds by the UNSC (similar in nature to the one conducted over [[Gao]] during the [[Insurrection]].{{Ref/Novel|HDW|Chapter=Epilogue}}) For [[Katrina]], this unrest resulted in power outages and service interruptions, with the general unrest further inflamed thanks to the ongoing investigation by [[Benjamin Giraud]] into the [[Office of Naval Intelligence]]'s cover-up of the [[SPARTAN-II program]] and an inability to explain the deep-space anomalies a result of the [[Guardian Custode]]s' awakening.{{Ref/Audio|Id=HtTS1E9|HtT|Season=1|Episode 09: Phantoms}} The stir caused by the NCA, in conjunction with the other issues of the time, caused the UEG to shut down [[Waypoint]] buoys throughout human space - cutting off colony worlds from communication with one another. However, the later framing of Ben Giraud as an instigator working for the [[Sapien Sunrise]] terror organisation was intended to let the widespread anger simmer with Giraud as the target, followed by trade being allowed to resume and the buoys brought back online.{{Ref/Audio|Id=HtTS1E13|HtT|Season=1|Episode 13: In the Bag}}

Elsewhere, the NCA were busy corralling allies in various colonies by supplying military hardware in exchange for support.{{Ref/Novel|Id=Env21|Env|Chapter=21}} This was especially apparent in the [[Joint Occupation Zone]], where the NCA were eager to use any opportunity they could to stoke unrest for the UEG.{{Ref/Novel|Id=Env12|Env|Chapter=12}} On [[Carrow]], this included supplying the [[Surakan Militia Volunteers]] with military materiel including ex-UNSC ground and air vehicles, weapons, and ammunition.{{Ref/Novel|Id=Env4|Env|Chapter=4}} Vehicles supplied by the NCA included heavy-duty [[dropship]]s and gunships like [[D77 Pelican]]s and [[AV-22 Sparrowhawk]]s,{{Ref/Novel|Id=Env13|Env|Chapter=13}} alongside [[Warthog]]s and even an [[M313 Elephant|Elephant]] Heavy Recovery Vehicle.{{Ref/Reuse|Env21}} When the Surakans agreed to work alongside the UNSC and [[Sangheili]] colonists on Carrow for peace, the NCA cut their ties with the Surakans - with [[Ellis Gass]] suspecting that they may have even actively drawn the NCA's ire.{{Ref/Novel|Id=Env9|Env|Chapter=9}} [[Melody Azikiwe]] suspected that the [[Sapien Sunrise]] terrorist group were also responsible for supplying the Surakans with hardware.{{Ref/Reuse|Env21}}

On the remote [[human colony]] of [[Conrad's Point]], the NCA rebels and mercenaries were undisciplined and poorly led by an unidentified colonel. The colonel would be relieved of command when Ilsa Zane arrived on the planet. Zane organized the rebels into a more formidable force, operating ruthlessly and killing anyone who didn't carry their weight. Under her command the NCA forces on the colony started to prepare for war with the UEG and accumulated a large amount of [[Nuclear weapon|nuclear weaponry]].{{Ref/Audio|Id=HtTS2E2|HtT|Season=2|Episode 02: From Fire to Blood}}{{Ref/Reuse|T3L}}

On [[Terceira]], in the absence of a strong UEG presence, competing corporate entities and grass-roots organizations fought for autonomy  and, for some, outright control of the colony in the power vacuum that had emerged. This situation was further exacerbated the presence of the [[United Rebel Front]] and the rise of the [[Created]] reducing the UEG's presence to a handful of under-armed ships attempting to police an entire world from orbit.{{Ref/Reuse|ET5}}

===Joining the Banished===
By [[2559#May|May 2559]], [[Ilsa Zane]] - now fully-integrated within the [[Banished]] - was able to arrange a meeting with Admiral [[Mattius Drake]] and the bulk of the [[New Colonial Alliance|NCA]] forces holed up at an ex-[[Covenant]] [[space station]] in the [[Edolas system]]. This force included the NCA's [[flagship]] [[NCA D'artagnan|NCA ''D'artagnan'']], around two dozen [[UNSC frigate|light frigates]], [[UNSC corvette|corvettes]] and merchant trawlers, and the remnants of [[Vata 'Gajat]]'s [[Vata 'Gajat's mercenary group|mercenaries]] - now led by [[Tek]]. During the meeting, Zane demonstrated her distaste for Drake by tying him into his chair and executing him in front of the Banished [[War Chief]] [[Escharum]], before swearing the NCA's loyalty to the Banished as a whole. Zane felt that Drake had critically missed the NCA's prime opportunity to kickstart their war with the UEG and was too cowardly to do what needed to be done - in turn risking that all of the support the NCA had worked to build would eventually abandon them and go their own ways. By this time, Zane noted that NCA agents were dispersed across numerous front lines, and the NCA fleet was stationed throughout the colonies, and soon after pledging their allegiance, Escharum quickly put his new allies in the New Colonial Alliance to work.{{Ref/Novel|Id=T3L|Halo: The Third Life}} By the end of September that year, the NCA had begun a renewed campaign of raiding throughout the colonies, with an attack on [[Cygnus]]. This, combined with a number of other resurgent threats in the era, was an active contribution to [[Adam Andrews]]' efforts to pivot the [[Optican]] corporation towards the production of [[Janissary|supersoldiers]].{{Ref/Novel|Id=HVS|Halo: Venezian Sonata}}

==Continuing Sangheili-Jiralhanae hostility==
{{Quote|I hate them all!|[['Juran]] snarling and sobbing while kicking a dead Jiralhanae corpse after they had [[Attack on Rahnelo|massacred]] Sangheili on [[Rahnelo]]{{Ref/Reuse|SoI}}}}

{{Main|Sangheili-Jiralhanae war}}
{{Main|Attack on Rahnelo|Ambush at Duraan|Battle of the Prototype Halo installation}}
[[File:RCSS.png|thumb|200px|The Silent Shadow squad slaughtering Jiralhanae and their allies.]]

After the [[Changing of the Guard]], the [[Great Schism#Conflict erupts|massacre of the Councilors]], and the Jiralhanae ultimately forcing the Sangheili out of the original Covenant,{{Ref/Site|Id=UJ|URL=https://www.halowaypoint.com/en-us/universe/species/jiralhanae|Site=Halo Waypoint|Page=Jiralhanae|D=27|M=10|Y=2015|Quote=The resulting conflict would be called the Great Schism, and it would divide the Covenant into two, ultimately forcing the Sangheili out.}} the two species remain at war.{{Ref/Anthology|Id=TheReturn|Evo|Story= The Return|Quote=It was a terrible war. The Prophets provided the Brutes with powerful new weapons, hoping that they would in turn defend their Prophets against our wrath. But when the Prophets went into hiding, the lack of leadership allowed the Brutes to return to their savage nature and they soon began to fight against each other. This lack of solidarity made them much easier prey. Some of my fellow commanders continue that fight even now.}}

With Truth dead, ''High Charity'' destroyed, and the Ark heavily damaged after Installation 08's firing, some of the remaining Jiralhanae forces tried to rebuild their tattered strength to continue their war of conquest.{{Ref/Map|H3|Assembly}} Even though the Jiralhanae eventually collapsed into various civil wars, they still posed enough of a threat that Sangheili commanders kept up the offensive against them for at least another six years, even as they continued to lose irreplaceable warships and the war continued with no end in sight. This forced the [[Swords of Sanghelios]] and their [[United Nations Space Command|UNSC]] allies to fight in a two-front war, one was the [[Blooding Years]] against other Sangheili who remained loyal to the [[Covenant religion]] and the other was the continued conflict against the Brutes, who were also engaged in numerous civil wars.{{Ref/Reuse|TheReturn}}

Some fanatical Sangheili, who did not associate themselves with any particular Sangheili-led faction, continued to hunt down and eliminate all Jiralhanae they discovered, as well as any forces under their control. A notable example of such Sangheili was the [[Silent Shadow]] squad under the command of First Blade [[Resa 'Azavayl]]. They wiped out Jiralhanae forces across multiple systems, slaughtering them at an armory on the fourth moon of [[Victors' Truth]], aboard the stolen [[Covenant corvette]] ''[[Adherent]]'', at the northern highlands of [[Thalia]], aboard a derelict colonial substation orbiting [[Sansar]], and eradicating the last remaining members of [[Chieftain]] [[Tartarus]]' crew aboard the [[Covenant cruiser]] ''[[Rapid Conversion]]''. Ultimately, they found themselves face to face with [[Atriox]], leader of the [[Banished]]. When Atriox extended the Silent Shadow an offer to join the Banished, Resa refused, declaring that he and the Banished deserved death for their "sins". Atriox had mentioned to them that he was not involved in the [[Great Schism|betrayal and massacre]] of the Sangheili, and the squad began to view him as "other". Resa's brothers in arms, believing Resa was blinded by old loyalties and festering delusions of vengeance, turned on their leader and killed him. Afterwards, Atriox allowed the remaining members of the Silent Shadow to join the Banished, offering to reward them with "blood and sport and spoils".{{Ref/Reuse|HP}}

In 2553, over the Sangheili colony of [[Rahnelo]], there was an assault in the months following the end of the Covenant. In order to set a trap for Rtas 'Vadum and his {{Class|CAS|assault carrier}}, ''[[Shadow of Intent]]'', the [[San'Shyuum]] [[Prelate]] [[Tem'Bhetek]] of the [[Order of Restoration]], working alongside the former [[Boru'a'Neem|Minister of Preparation]] had Jiralhanae forces indiscriminately attack the colony, killing many and taking the kaidon and two of his sons hostage.{{Ref/Reuse|SoI}}

Boru'a'Neem and his Jiralhanae forces planned to activate a [[prototype Halo installation]] near Sanghelios, in an attempt to genocide the populace of the Sangheili homeworld. These plans were ultimately foiled by [[Rtas 'Vadum]], [[Tul 'Juran]], the crew of the ''[[Shadow of Intent]]'' and the Prelate himself after he discovered the truth about the deaths of his family. The Prelate would ultimately sacrifice himself to destroy the installation while Preparation, mortally wounded by 'Vadum and 'Juran, died in the blast after trying activate the ring.{{Ref/Reuse|SoI}}

===Attempted peace negotiations===
[[File:HE Spartans Ealen IV.png|225px|thumb|Spartan-IV security detail escorting the delegates.]]
{{Main|Battle of Ealen IV}}
The Covenant had strategically settled Jiralhanae populations on resource-rich worlds as a planetary garrison force to protect the worlds from potential raids. While the Jiralhanae continued to inhabit these worlds after the dissolution of the Covenant, they were unable to mine or utilize the resources because of their own lack of sufficient technology. With the Covenant's supply chains gone, the Jiralhanae quickly found their supplies near depletion. This was one of the primary reasons for their raids on Sangheili colonies after the Human-Covenant War; despite quite literally living on top of plentiful resources, the Jiralhanae were entirely dependent on the already processed supplies of other races due to their technological backwardness. However, the Jiralhanae could not sustain themselves via raiding alone in the long term and their supplies began to wear thin, leading to an impending species-wide famine in [[2558]] and an increase in Jiralhanae attacks across Sangheili and [[Kig-Yar]] colonies as a result. During this crisis, the [[Jiralhanae Chieftain]] [[Lydus]] and his [[Children of Oth Sonin|clan]] were willing to initiate peace talks with [[Arbiter]] [[Thel Vadam]] and the [[Swords of Sanghelios]], overseen by the [[UNSC]].{{Ref/Comic|Id=HE1|HE|Issue=1}} However, the negotiations were interrupted by Covenant mercenaries hired by the [[New Colonial Alliance]].{{Ref/Reuse|HE5}}

By late 2558, Lydus had successfully cooperated with 'Vadam to reclaim Jiralhanae laborers held on Sangheili lands. This act of diplomacy, however, irritated the Arbiter's own clan member, [[Elder]] [[Murok 'Vadam]], who saw any peace talks with the Jiralhanae as useless folly.{{Ref/Novel|Id=FC|Halo: Fifth Canticle}}

===Ongoing battles===
The Jiralhanae were supplied with powerful new weapons by their [[San'Shyuum]] leaders. When the San 'Shyuum went into hiding, the Jiralhanae began to lose order and started to fight amongst each other. This ultimately gave the upper-hand to their Sangheili opponents. As of 2559, the Sangheili are currently winning their war against the Jiralhanae.{{Ref/Reuse|TheReturn}}
{{Clear}}

==Blooding Years==
[[File:HM-BloodingYears.jpg|thumb|250px|Thel 'Vadam observes the clash between the Swords of Sanghelios and the Servants of the Abiding Truth.]]
{{Main|Blooding Years}}
Since 2553, the [[Swords of Sanghelios]] have fought against various Covenant splinter factions, due to their continued hatred of humanity. These conflicts, also known as the Sangheilli Civil War, have featured notable Covenant splinter factions such as the Servants of the Abiding Truth and Jul 'Mdama's covenant.

===Assault on Vadam===
{{Main|Siege at Kolaar}}
After the Human-Covenant War, many Sangheili still worshiped the [[Forerunner]]s as gods. A religious sect known as the [[Servants of the Abiding Truth]], led by war veteran [[Field Master]] [[Avu Med 'Telcam]], took to believing that any tampering with Forerunner relics was heresy, just as most Sangheili did before the founding of the [[Covenant]]. As a result, 'Telcam and his followers grew angry with [[Arbiter]] [[Thel 'Vadam]]'s government. After winning the favor of several [[keep]]s and mustering a small space fleet, the Servants led an uprising in the state of [[Vadam]]. They initially held the upper hand, but the tide turned when the {{UNSCShip|Infinity}} arrived and intervened on behalf of the Arbiter, shooting down a rebel destroyer and firing a [[Magnetic Accelerator Cannon|MAC]] round into massing rebel ground forces besieging 'Vadam's keep. However, the conflicts in Vadam led to other engagements throughout Sanghelios. Over the next few months, unrest on Sanghelios was put down though off and on fighting would continue for years and include a number of Sangheili worlds.

===Other engagements===
[[Jul 'Mdama]], a former [[shipmaster]] and an affiliate of the Servants of the Abiding Truth, became disillusioned with the Arbiter and humanity after being kidnapped by the Office of Naval Intelligence; his resolve was strengthened when his wife, [[Raia 'Mdama|Raia]], was killed in the civil conflict.{{Ref/Novel|TTW|Page=442}} After escaping ONI custody on the [[shield world]] [[Sarcophagus]] via a Forerunner [[Slipspace portal|portal]], Jul gained a small following of Sangheili on the colony world [[Hesduros]], the populace of which was unaware of the Schism and the war's end.{{Ref/Novel|TTW|Page=441}} Feigning religious devotion to the Forerunners, he resolved to recover Forerunner technology from the shield world [[Requiem]]. It was here where 'Mdama would establish a new [[Jul 'Mdama's Covenant|faction]], self-proclaimed to be "the Covenant".{{Ref/Comic|Id=escalation5|HE|Issue=5|Quote=What does it mean to be 'Covenant' today? A hundred warlords claim they rule the Covenant, but each of them leads only a small faction.}}

On [[2554|April 22, 2554]], Jul 'Mdama's forces fought against the Swords of Sanghelios' ''[[Shadow of Intent]]'' and managed to leave the ship combat ineffective.<ref name="Catalog">[https://forums.halowaypoint.com/yaf_postsm2969315_Catalog-Interaction.aspx#post2969315 '''Halo Waypoint''': ''Catalog Interaction - Page 14'']</ref> 

By 2558, Jul 'Mdama's Covenant were ravaged by multiple defeats in battles with UNSC and betrayals from within. One of his Zealots, [[Sali 'Nyon]], would lead a revolt, killing those loyal to 'Mdama and seizing control of {{Class|CAS|assault carrier}} ''[[Breath of Annihilation]]'', taking her back into Sangheili space to rally further support among the Covenant remnants. However, Jul's forces on Sanghelios still continued their stand-off against the Arbiter, until his [[Battle of Kamchatka|death]] later that year. With no leader, Jul's Covenant could not withstand joint UNSC and Swords of Sanghelios strike forces at [[Sunaion]] and were completely destroyed.{{Ref/Reuse|h5g}}

In 2558, the Servants of the Abiding Truth also were dealt a crushing blow when Avu Med 'Telcam and two of his ranking commanders were assassinated. 'Telcam was dispatched on New Llanelli by a lone Spartan, [[SPARTAN-G059]]. However, her secondary target, Avu Med 'Telcam's protege: [[Dural 'Mdama]], was not present during the attack and lived on.{{Ref/Reuse|KTB}} Under the guidance of Dural 'Mdama, the Abiding Truth soon [[Second Onyx conflict|struck back]] at the UNSC and its Sangheili allies.{{Ref/Site|Id=CFLocalUnits|URL=https://www.halowaypoint.com/en-us/news/golden-clouds|Site=Halo Waypoint|Page=Community Update - Golden Clouds|D=21|M=8|Y=2017}}

==ONI black ops==
===Kilo-Five===
[[File:HM-K5-2.JPG|thumb|225px|Members of Kilo-Five preparing for the next mission.]]
{{Main|Skirmish on Pious Inquisitor}}

After the Treaty of 2552, the Office of Naval Intelligence, believed that keeping the Sangheili mired in internal dissent would leave them unable to threaten the weakened UNSC. This opinion contrasted with that of most of the Unified Earth Government, which believed a peace treaty was desirable. ONI took advantage of the Sangheili's unstable political situation, attempting to keep the Sangheili splintered and disorganized by inciting the Servants of the Abiding Truth to rebel against 'Vadam. ONI's aid allowed the Servants of the Abiding Truth to amass enough weapons to begin an all-out insurrection against 'Vadam and his allies in early 2553. When the fighting on Sanghelios started, ONI black ops unit [[Kilo-Five]] were ordered to keep the planet destabilized for fear that the Sangheili would oppose humanity if they were politically unified, and so they used their [[prowler]] {{UNSCShip|Port Stanley}} to destroy some of 'Vadam's cruisers. This caused a temporary stalemate, but the battle continued until 'Vadam and his allies emerged victorious. The Servants retreated off-world to [[New Llanelli]] to recover from their losses, putting the war on hold.{{Ref/Reuse|HTTW}}

In [[2553#March|March 2553]], [[Kig-Yar]] [[piracy|pirate]] [[Sav Fel]] stole a {{Pattern|Ket|battlecruiser}}, the ''[[Pious Inquisitor]]'', from the Servants of the Abiding Truth.{{Ref/Novel|TTW|Page=329}} Fel retreated with the battlecruiser to his manor on [[Venezia]], where he sold it to [[Insurrectionist]] [[Staffan Sentzke]], a commander in the [[Venezian militia]], who intended to use it to threaten [[Earth]] to learn about [[Naomi-010|his daughter's]] fate.{{Ref/Novel|MorDi|Page=12}} The crew of ''[[Paragon]]''—led by [[Shipmaster|Shipmistress]] [[Chol Von]]—was hired by Avu Med 'Telcam to retrieve the vessel and arrived at the cruiser's [[Shaps system|location]] in April 2553, with Fel. While Von wish to capture ''Pious Inquisitor'' to use as a [[flagship]] in a united Kig-Yar navy,{{Ref/Novel|MorDi|Page=139-140}} Kilo-Five intended to take control of the vessel and return it to Thel 'Vadam.{{Ref/Novel|MorDi|Page=436}} Ultimately, Kilo-Five—along with Staffan—and the crew of ''Paragon'' both attempted to seize the battlecruiser at the same time and a skirmish occurred on the ship. During the firefight, [[Sometimes Sinks]], the eccentric [[Huragok]] that served aboard ''Inquisitor'', transitioned the ship to a location designated by Staffan.{{Ref/Novel|MorDi|Page=336}} With eight of the Kig-Yar dead and Kilo-Five approaching the bridge, Von had her remaining crew detonate the ship's [[plasma turret|plasma torpedo]] reserves, choosing to destroy ''Pious Inquisitor'' over leaving it to the humans.{{Ref/Novel|MorDi|Page=442}} Von and her remaining crew managed to escape in time, along with Kilo-Five. While Staffan and Sinks escaped in the Spirit with the [[slipspace drive]] that Sinks had installed earlier,{{Ref/Novel|MorDi|Page=457}} the UNSC presumed Staffan dead and thus believed that the Venezian threat was neutralized as they no longer had the power to glass planets.{{Ref/Novel|MorDi|Page=458}}

===Trouble on Gao===
{{Main|Operation: JOVIAN WHISTLE}}
[[File:HM-Gao.png|thumb|200px|Mark-G313, Fred-104 and Veta Lopis fighting off the Keepers of the One Freedom on Gao.]]
After [[Blue Team]]'s return in UNSC-controlled territory following the end of the Covenant War in March 2553, the [[Office of Naval Intelligence]] assigned the Spartans to new deployments. [[Operation: JOVIAN WHISTLE|One of these missions]] involved protecting a [[717th Xeno-Materials Exploitation Battalion|UNSC research battalion]] on the planet [[Gao]].{{Ref/Site|Id=CFAzure|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-azure-noir|Site=Halo Waypoint|Page=Canon Fodder - Azure Noir|D=11|M=07|Y=2018}} Following the reassignment of the Spartan-IIIs who had been part of the team since the [[Onyx Conflict]], the Spartan-IIs of Blue Team—[[Frederic-104]], [[Kelly-087]] and [[Linda-058]]—were deployed on the outer fringes of human-occupied territory to eliminate lingering pockets of the previous war for many years. The nature of these missions remained highly classified.{{Ref/Site|URL=https://www.halowaypoint.com/en-us/universe/characters/frederic-104|Site=Halo Waypoint|Page=Fredric-104|D=19|M=3|Y=2021}}{{Ref/Site|URL=https://www.halowaypoint.com/en-us/universe/characters/linda-058|Site=Halo Waypoint|Page=Linda-058|D=3|M=11|Y=2015}}

{{stub|section=yes}}

===Ambush on Ferret Team===
During a [[Ferret]] team training exercise on [[Neos Atlantis]] on [[2553#October|October 14, 2553]], [[Dark Moon Enterprises]] attempted to publicly expose the secrets of the [[Spartan-III]] [[Gamma Company]] illegal augmentations, believed to be because such a revelation would cripple ONI and create a power vacuum that Dark Moon could then fill. To this end, former ONI [[Commander]] [[Ota Gallo]] helped reporter [[Spencer Hume]] drug [[Olivia-G291]] with [[nicothiotal]] so that Hume could question her and use the information to expose the illegal augmentations. However, team leader [[Veta Lopis]] quickly realized what was happening and had the rest of the Ferrets intervene, leading to an assassination attempt on [[Mark-G313]] in a service hallway by Gallo. The attempt failed, but Hume was accidentally killed by Mark in the process. Mark disposed of Hume's body out of an [[airlock]] with the help of [[Ash-G099]], but they were noticed by Commander [[Svenson]] of [[Oscar Squad]] who the training exercise was against. At the same time, Gallo erased all of the security footage of the incident in order to be able to avoid detection.

As the Ferrets regrouped in the suite acting as their safe house, they were visited by [[Rear Admiral]] [[Serin Osman]] and Commander Svenson who accused Mark of murder, though he couldn't prove it. Veta denied the accusations and suspected Oscar Squad had gone too far in the training exercise. Osman gave them two hours to discover the truth and the Ferrets managed to identify Gallo and her connection to Dark Moon. It was quickly realized that it was not a training exercise gone wrong but an attempt to expose them and cripple ONI. In order to draw Gallo into a trap, Olivia sent a message detailing what they had learned from Hume's [[COM pad]] to both Osman and Gallo. Gallo, needing to retrieve the COM pad which proved she was Hume's source, attacked the suite with two other Dark Moon operatives. The Ferrets were able to eliminate Gallo and her men, but Olivia was severely injured in the process and Hume's COM pad damaged. When Osman returned, the Ferrets turned over the COM pad to her and Veta pinned Hume's death on Gallo covering her tracks. Though Osman was obviously skeptical, Mark backed up Veta's story without hesitation and Osman accepted it.{{Ref/Anthology|Fra|Story=A Necessary Truth}}

===The archeon's plot===
{{Main|Operation: RETRIBUTION}}
In [[2553#December|December 2553]], [[Vice Admiral]] [[Graselyn Tuwa]] was assassinated and her family kidnapped. The chief suspects were [[Covenant remnants]] such as the [[Banished]] and the [[Keepers of the One Freedom]]. Forensic evidence at the scene pointed to the attackers being a mixture of [[Jiralhanae]], humans and some [[Kig-Yar]], suggesting that the culprits were the Keepers. In response, the UNSC launched [[Operation: RETRIBUTION]] to find the admiral's killer and rescue her family. To this end, [[Veta Lopis]]' [[Ferret]] team were sent to locate the Keepers new base with the help of [[Blue Team]] and the {{Class|Sahara|prowler}} {{UNSCShip|Silent Joe}}. They were unaware that the true culprit was the [[archeon-class ancilla]] [[Intrepid Eye]] through her remote aspects and [[Dark Moon Enterprises]] as part of her plot to prepare humanity for the Mantle. The Tuwa family, minus the admiral, were the only survivors of an outbreak of the deadly [[asteroidea merozoite]] due to a unique mutation. Intrepid Eye intended to turn asteroidea into a [[bioweapon]] in order to cull those she deemed unworthy of the Mantle. Due to the Tuwa's immunity to it, they were kidnapped and taken to a lab on [[Gao]] to culture a vaccine while the Keepers were framed for the crime.

[[File:Halo Retribution cover.png|left|thumb|250px|Former inspector Lopis continued investigating attacks against humanity now on behalf of ONI.]]
The Ferrets were able to locate the Keepers' [[Salvation Base]] on [[Taram]] which had been built in the middle of the Forerunners [[Suluhu Contemplarium]] on the orders of Intrepid Eye as part of another one of her plans. As they searched the base, the Ferrets located a Dark Moon [[Turaco]] which had been used to move the bodies of the Tuwa's to Salvation Base after their organs had been harvested and placed in [[cryo-jar]]s. Inside the detention center, Veta and [[Mark-G313]] found the bodies of the family staged to look as if the Keepers were the killers, but realized quickly that the whole scene was staged. As Blue Team arrived, the Ferrets attempted to stop the Dark Moon operatives from escaping, only to have them captured by [[Castor]]. After [[Linda-058]] armed six [[HAVOK tactical nuclear weapon]]s, both teams escaped in the Turaco as the nuclear detonation destroyed Salvation Base and ninety percent of the Keepers forces stationed there.

On the ''Silent Joe'', Veta insisted upon continuing the investigation with the connection between the Tuwa's and the asteroidea quickly being realized. Using forensic evidence taken from the Tuwa's recovered bodies, the UNSC was able to track the murder scene to the lab on [[Gao]] where the vaccine experiments had been performed. However, by the time that they arrived, Castor had already raided and destroyed the lab, having learned of its location from the captured operatives. With the help of the facility's captured director, Castor had continued his pursuit of Dark Moon for revenge for Dark Moon framing him. Veta confronted Gao President [[Arlo Casille]] who admitted to allowing Dark Moon to use the laboratory in exchange for their getting the UNSC to get the Keepers off of his back. While he knew about the Tuwa family, he hadn't reported it out of fear of an invasion if the UNSC knew. Realizing that Dark Moon had set up both the Keepers and Gao to take the fall, Casille pointed the Ferrets towards [[Pinnacle Station]] at [[Meridian]] whose [[smart AI]] [[Sloan|Administrator Sloan]] had recommended Dark Moon to him in the first place.

At the same time, Intrepid Eye learned of the destruction of Salvation Base and the failure of the attempt to frame the Keepers. To keep from being found out, Intrepid Eye dispatched her remote aspect [[Oriel]], [[Lieutenant]] [[Bartalan Craddog]] who she was blackmailing and the ONI security unit [[Papa-10]] to retrieve the cryo-jars holding the Tuwa's organs and to execute the Dark Moon couriers. At Pinnacle Station, Papa-10 successfully eliminated the Dark Moon couriers and retrieved the cryo-jars, but were ambushed by the Keepers led by a vengeful Castor. Craddog managed to kill [[Orsun]] and several Kig-Yar with an [[M41 SPNKR]], but the Keeper attack proved to be too overwhelming for Papa-10 whose three survivors were forced to flee to the surface of Meridian, chased by Castor and three Jiralhanae.

Shortly after the firefight, the Ferrets and Blue Team arrived to find the aftermath. Thinking that they were associated with Papa-10, Sloan explained that he had rented Dark Moon a hidden berth at their request and directed the teams to the location on Meridian where Papa-10 and Castor's forces had landed. Though suspicious of the circumstances, the Ferrets and Blue Team followed Papa-10's survivors into an abandoned mine where they helped to eliminate Castor's forces. However, Papa-10 attacked, seriously injuring [[Frederic-104]] and fleeing towards an extraction point suggested by Sloan. Both Castor and Veta managed to hang onto Papa-10's vehicle and Castor succeeded in eliminating two of the operatives, but was knocked off of the vehicle after Veta tried and failed to make an alliance with him against their common enemy. After placing [[C-12 shaped charge|C-12 explosive]] around the cryo-jars, Veta abandoned the vehicle and watched as it met up with a Pinnacle Station utility skiff piloted by Craddog. With the remaining Papa-10 operative pointing an assault rifle at her and unwilling to let them get away with the cryo-jars containing the Tuwa's organs, Veta detonated the explosives. The blast killed the last Papa-10 operative and Craddog and destroyed the cryo-jars, the utility skiff and Intrepid Eye's remote aspect Oriel, foiling the plot.

In the aftermath, [[Rear Admiral]] [[Serin Osman]] had the Ferrets returned to the [[Mill]] to complete their training and warned Veta that a greater threat was coming that she needed the Ferrets ready for. Additionally, ONI concluded that Craddog had been working on his own initiative to initiate [[Project SLEEPING STAR]] in the absence of any orders telling him to do so. Intrepid Eye avoided discovery as the true culprit, though she was unable to confirm the death of Castor and the destruction of his cell with the destruction of Oriel, one of her oldest and most useful remote aspects. Though [[Rear Admiral]] [[Serin Osman]] ordered Project SLEEPING STAR shut down, Intrepid Eye manipulated the orders so that it continued in secret aboard the ''[[Argent Moon]]'' as the bioweapon project was too important to her plans to be allowed to be stopped.{{Ref/Novel|Id=Ret|Ret}}

===Sedra and Alpha Shard===
[[File:HM_-_Alpha_Shard.jpg|thumb|225px|Randall Aiken and Jameson Locke on Alpha Shard.]]
{{Main|Terrorist attack on Sedra City|Mission to Alpha Shard}}
On [[2556|February 7, 2556]], an [[Locke's team|ONI team]] led by [[Jameson Locke|Lt. Commander Jameson Locke]] was dispatched to the distant [[human colonies|human colony]] [[Sedra]] to investigate [[terrorism|terrorist]] activity. The investigation led them to the [[Sedra City|capital city]] where a [[Sangheili]] [[terrorist]], managed to unleash a powerful [[bioweapon]] that randomly broke down human DNA. A subsequent investigation revealed that the substance used to create the bioweapon originated from a [[Alpha Shard|surviving fragment]] of [[Installation 04]], propelled through slipspace into orbit around a red giant star. With no support from UNSC, as it would have been a violation of peace treaty, the Locke's team were forced to cooperate with the [[Sedran Colonial Guard]] on a mission to capture the smugglers who mined the element and destroy the deposits with a [[HAVOK tactical nuclear weapon]]. However, what was to be a swift operation quickly turned into a desperate battle for survival after the group was attacked by [[Lekgolo]] swarms that resided on the Halo fragment. The mission ended with the destruction of the bioweapon's deposits, but at the expense of the lives of almost all the joint team, including the former SPARTAN-II [[Randall-037]], with Lt. Commander Locke and Private [[Talitha Macer]] being the only survivors.{{Ref/Film|Id=hnf|HN}}

===Later missions and Biko incident===
{{Main|Raid on Biko peace talks}}
Blue Team reunited with their previous leader, [[John-117]], on [[2557|July 25, 2557]], after which they embarked on a new series of missions for over a year.{{Ref/Reuse|h5 blue team}} During one such mission, in early [[2558]], Blue Team managed to stop fanatical [[Covenant remnants|ex-Covenant]], who had hijacked an [[M510 Mammoth]] and tried to use it to ram a new ONI research facility's main [[fusion reactor]]. The Spartans prevented the disaster without any civilian casualties.{{Ref/Comic|Id=otb|TFS|Story=On the Brink}}

[[File:Master Chief leaks.jpg|thumb|225px|left|John-117 during the Raid on Biko.]]
After years of diplomatic work, peace talks were finally scheduled between humanity's Unified Earth Government and the Sangheili. The convocation was held in a regional embassy in a densely populated city on [[Biko]] in the human Outer Colonies. [[Richard Sekibo]], the revered ambassador of the Outer Colonies, led the conference. Sekibo had uncovered evidence of a terrorist plot by [[Sapien Sunrise]] one week before the attack. He petitioned the UNSC for help, but they rejected his request immediately. As the conference was coming to an end, an agreement of peace was close to being reached. Suddenly, rogue Spartan-II John-117 entered the embassy and instantly killed Richard Sekibo's bodyguard, who in reality were Sapien Sunrise infiltrators. A firefight began, in which John abducted Sekibo and created an escape path through the infiltrators by killing them. John fled the embassy alongside the Sangheili delegation, which he escorted to safety. Outside the embassy, an evacuation ship for John was waiting. He boarded the ship, alongside the alien diplomats, and fled the planet. At some point, Sekibo was killed and his corpse was left behind in a field near the embassy on Biko. The next day, local officials discovered a signal beacon that led them to the body of Sekibo.{{Ref/Audio|Id=HTT8|HtT|Season=1|Episode 08: Drip, Drip, Drip}}{{Ref/Audio|Id=HTT10|HtT|Season=1|Episode 10: Gag Order}}

===Bioweapon incident===
[[File:HE Covie Group.jpg|thumb|225px|A pirate force on Ven III.]]
{{Main|Operation: WHISTLE STOP}}
By 2558, [[Ven III]] had become a hot spot for numerous [[Kig-Yar]] smugglers, [[black market]] arm dealers, and slavers. When FLEETCOM ignored the Office of Naval Intelligence's requests to assault the pirate base, ONI devised a false-flag operation involving a [[biological agent]] purportedly stolen by a [[Ayit 'Sevi|Sangheili agent]] of [[Jul 'Mdama]]—in truth a mercenary hired by ONI—to force the Fleet to take action. [[Serin Osman|Admiral Osman]] tasked Captain Lasky of ''Infinity'' with capturing the Sangheili and recovering the bioweapon before it could threaten human colonies. Lasky selected Spartans [[Gabriel Thorne]] and [[Naiya Ray]] for the mission and they were deployed on Ven III.{{Ref/Comic|HE|Issue=11}} After Thorne was captured and Ray discovered the pirate hideout Lasky decided to involve ''Infinity'' in the mission and engaged the pirates in space and in their stronghold. Spartan Ray rescued Thorne and chased down the Sangheili agent but ONI personnel forced Ray to stand down and took the Sangheili into custody.{{Ref/Comic|HE|Issue=12}}

===Cutting ties===
{{Main|Assassination of Avu Med 'Telcam}}
By 2558, Avu Med 'Telcam had outserved his usefulness to ONI's plans and on [[2558#January|January 21, 2558]], ONI [[Section Three]] deployed the [[SPARTAN-G059]] aboard the {{Class|Winter|prowler}} {{UNSCShip|From the Ashes}} to New Llanelli to assassinate him. Upon her arrival in the remains of the city, she quickly located 'Telcam and eliminated his Sangheili guards. After brief fight the Spartan knocked the Sangheili to the ground and executed him with a single [[M6 series|pistol]] shot to the head. The assassin did not claim the life of her secondary target, Avu Med 'Telcam's protege, [[Dural 'Mdama]]. 'Mdama, known as the ''Pale Blade'', would become a leading member of the Abiding Truth and was fortunate not to be among those in the attack. The Spartan was quickly extracted by ''From the Ashes'', which entered [[slipspace]] upon leaving the planet.{{Ref/Comic|Id=KTB|TFS|Story=Knight Takes Bishop}}

===Keepers Eradication Campaign===
{{Main|Keepers Eradication Campaign}}
In [[2557]], the [[Ferret]]s were sent undercover by ONI into the [[Keepers of the One Freedom]]. By infiltrating an allied doomsday cult, the [[Humans of the Joyous Journey]], the Ferrets were successfully able to penetrate the Keepers. Over the course of eight months, the Ferrets gathered and relayed intelligence to ONI that enabled them to embark upon a massive eradication campaign against the Keepers of the One Freedom, resulting in the deaths of around 15,000 Keepers and the decimation of the faction.{{Ref/Novel|Id=DW1|DW|Chapter=1}}{{Ref/Novel|Id=DW11|DW|Chapter=11}}

To the surprise of everyone, [[Castor]] responded by seeking refuge for his surviving forces with the [[Banished]]. Seeing a chance to potentially assassinate [[Atriox]], ONI had the Ferrets remain undercover in the hopes of killing Atriox. However, Atriox vanished soon after with his [[flagship]] the {{Class|CAS|assault carrier}} ''[[Enduring Conviction]]'' and the Ferrets remained undercover for over two years.{{Ref/Reuse|DW1}}

===Anti-slave operations===
{{Main|Battle of the Azorian Valley}}
By [[2559#November|November 2559]], the rise of the [[Created]] and the fading presence of the UEG allowed another conflict to take root on [[Terceira]] and [[slavery|slaving]] operations to hit the colonists of the world. Various private corporations would buy these slaves to meet their quotas, replacing the automation that had been lost with the rise of the Created.

ONI sent private military contractor [[James Solomon]] to [[Battle of the Azorian Valley|destroy]] six stolen {{Class|Paris|heavy frigate}}s being used to acquire some of these slaves on November 5. ONI hoped to expose the identities of the corporations behind this effort as well as to set back their operations by months, if not years. Despite some interference from the crews, including four Venezian [[Janissary|Janissaries]], James succeeded in his mission. James disabled the drive systems of the frigates, sending them crashing into a gorge where the [[fusion drive]] of one detonated, ensuring that any trace of the slavers that hadn't been atomized would be buried under the gorge's walls.{{Ref/Novel|Id=ET5|ET|Chapter=5}} Despite his success, James suspected that ONI had no intention to rescue the slaves and everything that he'd done was just a move in a political chess game that they were playing.{{Ref/Novel|Id=ET9|ET|Chapter=9}}

==Spartan Ops==
[[File:HM SpartanIVs.jpg|thumb|225px|Spartan Commander Sarah Palmer with some other Spartan-IVs.]]
{{Main|Spartan Operations}}
Following the Covenant War, a rising number of Spartan-IVs were also deployed to quell [[Covenant remnants|Covenant]] and [[Insurrectionist]] threats on [[human colonies]] and exotic worlds, as part of what is collectively referred to as the Spartan Ops program.<ref>[https://www.halowaypoint.com/en-us/games/halo-spartan-strike/windows ''Halo Waypoint'': ''Halo: Spartan Strike''] ("''...the historic first missions of the Spartan Ops program...''")</ref> These missions consisted in suppressing revolts, civil unrest and uprisings; assassinating insurrectionist leaders; exploring uncharted space and worlds; halting criminal activities; providing security to UNSC bases, ONI classified sites, colonies and civilian populations; and escorting scientific expeditions. Such Spartan deployments have been sent to [[Cascade]], [[Talitsa]], [[Terceira]], [[Thales]], [[Trevelyan]], [[Installation 03]], [[Gaenir Beta]], [[Charion VI]], and [[New Caracas]]. Several MJOLNIR [GEN2] armors have been field-tested in such operations.{{Ref/Book|H4EVG|Detail=Armors}} [[SPARTAN-III program|Spartan-III]] and Spartan-IV personnel have also been employed as part of the post-war [[Headhunters]] during classified missions.{{Ref/Site|Id=CFHaveSmoa|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-have-s-moa|Site=Halo Waypoint|Page=Canon Fodder - Have S'moa|D=28|M=03|Y=2019}} In [[2556]] Spartan-IV [[Fireteam Apollo]] was deployed to the exclusion zone around the debris of [[Installation 04]] near [[Threshold]] in violation of the [[Treaty of 2552]] as part of a salvage [[Operation: SHELL GAME|operation]].{{Ref/Generic|Id=HLCDD3|Heading=[[Halo Legendary Crate]]|Subheading=[[Halo Legendary Crate/Data Drops|Data Drop #3]]|Detail=[[:File:LC 003 Doc1.png|Interspecies Relations]]}} The Spartans would ultimately bring down countless Covenant factions and succeeded in one black ops mission after another relying on nothing more than their skill, their armor, and their teammates.{{Ref/Novel|Id=rp14|RP|Chapter=14}}

===Draetheus V===
{{Main|Battle of Draetheus V}}
In 2554, a [[Merg Vol's Covenant|former Covenant fleet]] led by [[Merg Vol]] invaded the UNSC research colony [[Draetheus V]] and its moon, [[X50]], in search of Forerunner relics, beginning a [[Battle of Draetheus V|major battle]] which marked one of the first missions of the UNSC's recently formed [[Spartan Operations]] branch.{{Ref/YouTube|rKjakadAOic|VG247.com|Halo: Spartan Assault - Debut Gameplay Reveal - Top Down Halo Shooter Revealed|Y=2013|M=6|D=4}} The battle saw significant losses on both sides and the planet itself was nearly destroyed by Vol's use of X50, which was in fact a Forerunner superweapon with the capability to destroy planets. The main hostilities concluded with Spartan [[Sarah Palmer]] killing Vol and sabotaging X50's main weapon, bringing Merg Vol's Covenant's quest to a halt. However, Vol's Covenant returned when a looping Forerunner code began emanating from X50.{{Ref/Level|SA|Mission 26: Battle at the Arid Sea}} After arriving at the source of the signal, Spartan Palmer discovered that the source was the remains of Spartan [[Edward Davis]], who had died during the battle. The installation disintegrated Davis's corpse and encapsulated it in an unknown device, and with the help of a Pelican, Palmer took the remains of her comrade with her.{{Ref/Level|SA|Mission 30: The Source}}

==Return to the Ark==
{{Main|Operation: FAR STORM|Battle of Earth (2555)}}
[[File:Hunters in the Dark full cover.jpg|thumb|250px|Joint UNSC-Swords of Sanghelios taskforce fighting [[Blind Wolf|Blind Wolves]] on Installation 00.]]
In [[2555]], renowned human scientist Doctor [[Luther Mann]] discovered the location of [[Installation 07]]. The Office of Naval Intelligence subsequently sent a research detachment to study Zeta Halo. While inspecting the ring's custodial systems, Mann discovered a Forerunner timer that was counting down to the [[Halo Array]]'s activation in five weeks. Both the UNSC and [[Swords of Sanghelios]] decided to travel to what remained of [[Installation 00]] to manually stop the timer. Members of the group came from both factions involved and met aboard the warship ''[[Mayhem]]''. When the [[Huragok]] [[Drifts Randomly]] activated the [[Excession]] for the first time since the [[Battle for Earth]] in [[2552]], a [[Retriever Sentinel]], sent by [[000 Tragic Solitude]], emerged through the portal and began strip-mining the area around the structure, forcing the {{UNSCShip|Endeavor}} and accompanying small craft to engage it. ''Mayhem'' proceeded to enter the portal to travel to the Ark. Upon exiting slipspace, the corvette was immediately engaged by more Retrievers, and was heavily damaged in the process, crash-landing on the surface of the installation. The group set out to go to the [[Installation 00 Citadel|Citadel]] by foot, encountering some of the installation's ambient life, including predatory species 'native' to the installation. Eventually arriving at the Citadel, the group shut down the firing of the rings.

Before the group could stop the firing of the rings, however, Tragic Solitude dispatched a fleet of Retrievers through the portal to strip-mine Earth and the rest of the Sol system. The [[UNSC Home Fleet]] engaged the invading force, initially repelling them but soon being overwhelmed by the Forerunner constructs' sheer numbers. Eventually there were only a dozen human ships left, which charged into the Retrievers in a last-ditch defense of Earth. However, due to the actions of the party at Installation 00, Tragic Solitude recalled the Retrievers, and they retreated through the portal back to the Ark. However, Tragic Solitude resumed his attack on the group and was destroyed by [[Bobby Kodiak]] at the cost of his own life. With the threat neutralized, the UNSC sent a fleet to the Ark to investigate and the ''Mayhem'' was rescued by the {{UNSCShip|Witness}}. Plans were made to repair the Ark using the Retriever Sentinels by directing them to mine lifeless systems and it was also decided to begin setting up research outposts on the installation.{{Ref/Novel|Id=HitD|HitD}}

==Attacks on Outer Colonies==
{{Main|Mission to Cleyell}}
Several of the more fanatical splinter factions of the Covenant continued the practice of [[glassing]] [[human colonies]] after the end of the Covenant War. The colony of [[Cleyell]] fell victim to such an attack in [[2556]].{{Ref/Comic|Id=HE17|HE|Issue=17}} The {{UNSCShip|Cascadia}} moved into orbit of Cleyell weeks later to deploy Army and Marine search-and-rescue teams to relieve the stranded colonists on the surface.
{{clear}}

==Resurgence of the Flood==
===Outbreak at Site 22===
{{Main|Outbreak at Site 22}}
In [[2556]], at Site 22 on the asteroid [[LV-31]], a small team of miners led by [[Mox]] entered a newly-discovered Forerunner ship, only to be beset upon by the Flood interred within - resulting in garbled distress transmissions to the {{UNSCShip|Saturn}} overseeing the operation. The [[Flood attacker form|now-infected]] Mox soon returned to the surface and began to attack the rest of the party, who only had basic mining tools with which to fight off the infected. The loss of contact was registered by the [[artificial intelligence]] [[Lycaon]], a [[Smart AI]] assigned to the {{UNSCShip|Saturn}}. Upon relaying the news to the ship's [[Captain (NAVCOM)|captain]], [[Pedro Alvarez]],{{Ref/Novel|Id=Saturn|Halo: Saturn Devouring His Son}} Lycaon attempted for two hours to get further information on the situation. However, BXR and IMC remained tight-lipped on the matter due to their unwillingness to compromise their potential find.{{Citation needed}}

When the ship was finally able to observe the site directly, the crew immediately recognized the [[Flood]] on the surface, resulting in Lycaon attempting to commence the standard [[Emergency Contact Protocol Upsilon|UPSILON]] protocol and urging Captain Alvarez to bombard the site with [[nuclear weapon]]s. Alvarez refused, believing the find to be of critical strategic significance to the rebuilding of the UNSC fleet, resulting in Lycaon's attempt to remove the captain from command as per [[UNSC Regulation 14-372-01]]. Lycaon was interrupted during his attempt to relieve Alvarez's command due to Alvarez's knowledge of the command override phrase ''actiones secundum fidei'' ("actions according to faith") - leaving the AI frozen and the junior crew hesitant to attempt a mutiny against their [[commanding officer]]. Instead, Alvarez ordered the deployment of several [[Condor]] dropships to deploy military forces to the site to begin Flood cleanup operations.{{Ref/Reuse|Saturn}}

Upon landing, the force (consisting of a squadron of [[HRUNTING Mark III (B) Cyclops|Cyclopses]], multiple [[Hellbringer]]s, and Spartan [[Fireteam Leviathan]]) was immediately engaged by the Flood, and for a brief time appeared to be successful in their attempt to mop up the outbreak. However, the Flood was soon able to bring down one of the Spartans, resulting in their infection and conversion to a [[Flood combat form|combat form]].{{Ref/Reuse|Saturn}} The Spartan's [[MJOLNIR Powered Assault Armor]] immediately detected the presence of the [[Flood Super Cell]] breach and reacted by overpressurising the armour's [[hydrostatic gel]] layer, crushing the Spartan's body, and activating the explosive mechanisms inside the Spartan's [[Visual Intelligence System, Reconnaissance|Gallows VISR]] - with the aim of destroying their brain. The Flood was able to counteract this and inject its own code into the suit, cancelling the countermeasure deployment and instead re-sealing the armour while converting the Spartan inside.{{Ref/Site|Id=Season5intel|URL=https://www.halowaypoint.com/news/reckoning-intel|Site=Halo Waypoint|Section=Halo Infinite|Page=Reckoning Intel|D=14|M=11|Y=2023|LocalArchive=Halo Infinite Story & Intel#Season 5}}

With the tables rapidly turning and the containment operation devolving into chaos, Alvarez realised his own shortsightedness and the risk now posed to [[Milky Way|the galaxy]] should the Flood make it off Site 22. Consequently, he gave the order to enact [[CORRUPTER]] protocols and begin [[Nuclear weapon|nuclear bombardment]] of the asteroid via [[Shiva-class nuclear missile]], giving all surviving ground-side personnel seven minutes to evacuate. During the bombardment, some Flood, including the now-infected [[Julien Donney]] and a Spartan, were able to reach one of the Condor dropships and use it to escape using its [[slipspace drive]].{{Ref/Reuse|Saturn}}{{Ref/Novel|Id=Atropos|Halo: Ascension on Atropos}}

After learning of the Flood's capture of one of the ''Saturn''{{'}}s slipspace-capable dropships, Alvarez chose to cover it up rather than report the Flood's escape to the UNSC.{{Ref/Reuse|Atropos}}

===Ascension on Atropos===
The Condor taken by the Flood would crash-land on the planet [[Atropos]], with many of the Flood forms onboard severely damaged. The ship would be discovered by [[Kanto'Boreft]], the Minister of Aretalogy and a member of the [[Governors of Contrition]] who had been exiled from [[High Charity]] for their extreme beliefs. Seeing the Flood as a emissary of the [[Forerunner|Gods]], the Minister sought to test them. He would dismantle the space station he had been assigned to, the [[Ninth Watchtower of August Attendance]], and relocated his followers to the planet's surface to be alongside Atropos' small human population. The [[Covenant Citadel|Citadel]] the Watchtower carried would become a temple for the Flood, where he would send one of his compliment as a "Chosen Sacrifice" for the parasite to grow it. Eventually, the Flood would break free of the Citadel and begin to swarm across Atropos before forming into a new compound form, transmitting a psychic signal into the cosmos, searching for something. The Minister would compose a final testament for any who would discover it before leaving to give himself to the Flood.{{Ref/Reuse|Atropos}}

==Search for the Librarian and the UNSC ''Spirit of Fire''==
After being recovered by the {{UNSCShip|Rubicon}}, [[343 Guilty Spark]], the former [[Monitor]] of [[Installation 04]], became determined to locate the [[Forerunner]] known as the [[Librarian]] whom he claimed was still alive. Spark hijacked the ''Rubicon'' and put the crew into cryo to search for the Librarian.{{Ref/Novel|Pri}} However, the ship crashed on [[Geranos-a]] in [[2554]], leaving the crew dead. Spark survived the crash by transferring himself into an [[armiger]] made out of parts salvaged by the ''Rubicon'' from [[Installation 00]] and activated a distress signal which was eventually picked up by a cargo ship in [[2557]] and relayed to ONI.{{Ref/Novel|Id=Renegades|Ren}}

In 2557, the [[salvager]] ''[[Ace of Spades]]'' captained by [[Rion Forge]] undertook a salvage operation to what turned out to be the wreckage of the {{UNSCShip|Roman Blue}}, the {{Class|Halcyon|light cruiser}} that was supposed to have retrieved the [[log buoy]] of the long lost {{UNSCShip|Spirit of Fire}} during the [[Battle for Arcadia]] in [[2531]].{{Ref/Novel|Id=Smoke and Shadow|SaS}}

===''Roman Blue''===
{{stub|section=yes}}

===''Radiant Perception''===
{{stub|section=yes}}

===Etran Harborage debris field===
[[File:Halo Smoke and Shadow clean cover.jpg|thumb|200px|''Ace of Spades'' followed the trail of ''Spirit of Fire'' up to the debris field of Etran Harborage.]]
{{stub|section=yes}}

===Captured by ONI===
During an operation to get a [[Luminary]], the crew of the ''[[Ace of Spades]]'' was captured by the [[ONI]] [[Prowler]] {{UNSCShip|Taurokado}}. ONI agents seized [[Little Bit]], his projections of the ''Spirit of Fire's'' possible flight path, recordings and even the crew's personal belongings. As Little Bit refused to cooperate with the agents, Agent [[Hahn]] forced [[Rion Forge]] to order the AI to comply, while also seizing all of the crew's assets and salvage, including a warehouse of items they had amassed. However, while aboard, Rion managed to hack the Prowler's communications and learned of the distress signal from the {{UNSCShip|Rubicon}} on [[Geranos-a]] which clearly held a great deal of interest for ONI. In an effort to force ONI to return their stolen property, the ''Ace of Spades'' crew chose to investigate and salvage from the ''Rubicon'' in hopes of finding what ONI wanted.{{Ref/Reuse|Renegades}}

===Mission to the Korinth Prior system===
{{Main|Mission to the Korinth Prior system}}
Using the data taken from the ''Ace of Spades'' and Little Bit, the ''Taurokado'' was able to locate the debris field of [[Trove]] in the [[Korinth Prior system]] and undertook a mission to investigate.{{Ref/Reuse|Renegades}} ''Taurokado'' conducted scans which showed that this debris field was composed of 94% naturally-occurring materials and 4% [[Forerunner]] materials, with 2% untraceable, and that of detritus size, 9% neared the scale of small lunar satellites while 84% were the size of the ship or smaller. ''Taurokado's'' sensors also revealed that low-level shielding sporadically surrounded structures of Forerunner origins.{{Ref/Generic|Id=HLCDD4|Heading=[[Halo Legendary Crate]]|Subheading=[[Halo Legendary Crate/Data Drops|Data Drop #4]]|Detail=[[:File:LC 004 Doc1.jpg|The Fir]][[:File:LC 004 Doc2.jpg|e's wake]]}}

At 0924 hours (MST), ''Taurokado'' commenced site surveys of identified Forerunner structures. Fireteam Apollo was deployed to investigate a number of these structures. At one, designated "Site 012", Apollo uncovered configurations matching the [[Sarcophagus]] at [[Onyx]]. At "Site 042" they confirmed that the debris had formerly been a [[shield world]]. Apollo also found evidence of Forerunner {{Class|Sojourner|dreadnought}}s and a [[Flood]] infestation at "Site 029" and "Site 021", respectively. At "Site 037", Apollo recovered identifiable [[human]] materials. Analysis confirmed that these had belonged to the ''Spirit of Fire'', including war materiel and [[Titanium-A armor|Titanium-A battleplating]]. However, no evidence of survivors was detected by either Apollo or ''Taurokado''.{{Ref/Reuse|HLCDD4}}

At 1642 hours (MST), ''Taurokado'' made contact with a hostile [[Jul 'Mdama's Covenant|Covenant remnant]] [[battle group]] led by [[Gek 'Lhar]].{{Ref/Reuse|Renegades}} Fireteam Apollo was distaptched in [[F-41 Broadsword]] fighters to intercept the enemy. After dispatching two waves of [[Type-31 Seraph]] fighters, Apollo fell back to the ''Taurokado''. At 1714 hours (MST), the ''Taurokado'' released sensor buoy "B89-7" and [[Slipstream space|slipped]] from the system, in accordance with protocol.{{Ref/Reuse|HLCDD4}}

===Alliance with Spark===
[[File:RenegadesArt.jpg|thumb|200px|343 Guilty Spark in his new form has found his place among the crew of ''Ace of Spades''.]]
With the ''Taurokado'' busy investigating the debris field, the ''Ace of Spades'' made its way to [[Geranos-a]] where they discovered and investigated the wreckage of the ''Rubicon'', salvaging many things from it, including the [[armiger]] of [[343 Guilty Spark]]. Spark was able to access the database of the ''Ace of Spades'' and became determined to continue his mission to find the [[Librarian]] using the ''Ace of Spades''. With the ''Taurokado'' and {{UNSCShip|Bad Moon Rising}} approaching, Spark helped the ''Ace of Spades'' escape into [[slipspace]] with the intention of taking the ship to [[Trove]] to get an [[upgrade seed]]. To get the crew to cooperate with him, Spark promised to allow them to salvage the [[Forerunner]] technology present on the [[shield world]], unaware that it had been destroyed by the {{UNSCShip|Spirit of Fire}} in [[2531]].

When the ''Ace of Spades'' returned to the debris field on June 29, it was to find [[Gek 'Lhar]] and [[Jul 'Mdama's Covenant|his forces]] working to salvage Forerunner technology from the wreckage. As the ''Ace of Spades'' dodged 'Lhar's forces, the [[UNSC]] unexpectedly returned to the system with a massive fleet. The UNSC fleet unleashed a massive nuclear bombardment upon the debris field in an act of asset denial, blowing the Etran Harborage debris field to bits and disrupting its gravity with the system's dwarf star. Anything that wasn't destroyed by the bombardment would likely be pulled into the star, eradicating the remnants of the Etran Harborage completely. Rather than fight, Gek 'Lhar fled to slipspace the moment the UNSC fleet opened fire while Spark managed to get the ''Ace of Spades'' out in time.

In order to continue his mission, Spark set course for the former Forerunner world of [[Triniel]] where a [[Builder]] facility was located to get the upgrade seed that the ''Ace of Spades'' needed. Spark provided the crew with a history of the Forerunners and the galaxy and offered to help them retrieve their belongings and data and search for the ''Spirit of Fire'' if they would help him complete his search for the Librarian, a deal that they ultimately accepted. Arriving to Triniel in July 2557, the ''Ace of Spades'' salvaged a lot of Forerunner technology from the Builder facility while Spark repaired problems with his armiger and created an upgrade seed for the ship. Though Spark intended to use the planet's communications satellites to contact the [[Domain]], he ultimately deactivated them before they could reboot as the crew wanted to leave Triniel free from mass exploitation as Triniel was a planet-wide mass grave for the population who had committed suicide to avoid the [[Flood]]. Spark later attempted to access the Domain but he was blocked by [[Catalog]].

With a bounty put upon them by Gek 'Lhar and ONI offering a deal to trade for their stolen data, credits and belongings the crew agreed to a meeting at [[Port Joy]] on [[Binterall]] in August. ONI kept their end of the bargain and turned over a clean copy of all of [[Little Bit]]'s projections and video recordings as well as the crew's belongings, while the crew claimed that they had only recovered a data core upon which was a fragment of Spark. After the meeting was attacked by bounty hunters, the crew fled and used the upgraded ''Ace of Spades'' [[slipspace]] drive to get past an attempt by the ''Taurakado'' and ''Bad Moon Rising'' to stop them. However, in the process Spark's armiger was revealed as was the fact that the ''Ace of Spades'' had received upgrades to its engines as well as illegal cloaking technology due to how well it had hidden until Spark brought the ship in to rescue the crew.{{Ref/Reuse|Renegades}}

===Mount Kilimanjaro===
{{Main|Mission to Mount Kilimanjaro}}
On September 1, 2557, the ''[[Ace of Spades]]'' arrived at [[Earth]] with the cloaking technology from the [[upgrade seed]] making the ship completely undetected on approach. The ship landed at [[Mount Kilimanjaro]] while Spark used his fragment to infect and shut down the ONI facility at the [[Voi]] while also using his fragment to search for data on [[Catalog]] who had been hounding ONI since [[2552]]. Before turning herself in for review, the AI [[Thea]] happened to detect the ''Ace of Spades'' and sent a quick warning seconds before the facility completely shut down. The AR team and [[Fireteam Apollo]] managed to blow their way out of Hanger One and headed for Kilimanjaro to stop the crew and Spark.

Spark led the ''Ace of Spades'' crew into Mawenzi where Rion's touch as a [[Reclaimer]] allowed them access into a Forerunner installation inside of the mountain where Rion deactivated a [[hard light]] barrier protecting a [[Lifeworker]] pod on a platform and activated a hard light bridge to the platform. Before Rion could deactivate the barrier around the pod, Spark finally admitted the truth to her: that [[John Forge|her father]] had died sacrificing himself to destroy [[Trove]]. Enraged at Spark keeping the truth from her, Rion attacked the armiger before she decided to deactivate the barrier and end their deal and alliance. However, before the crew could leave, Agent [[Hahn]], [[Fireteam Apollo]] and the AR team arrived in the facility and blocked their exit. Spark deactivated the light bridge on Rion's request before he entered the column of light surrounding the Lifeworker pod, but the ''Ace of Spades'' crew were left outnumbered and with no means of escape as the ONI forces worked to bring the light bridge back online.

Spark's entry into the column awakened a [[mind transfer|personality imprint]] of the [[Librarian]] stored within the pod. The Librarian greeted Spark by his original human name of [[Chakas]] and expressed regret for the pain she had caused him and marvel over the being he had evolved into. The Librarian revealed to Spark the awakening of both her imprint and [[Ur-Didact|the Didact]] at [[Requiem]] but wouldn't go further into details about it. Spark expressed his desire to bring his friends [[Riser]] and [[Vinnevra]] back, but the Librarian reminded him of what Spark had gone through as Chakas, bearing the essence of [[Forthencho]], Lord of Admirals. The Librarian revealed to Spark that his friends were at peace, their gene song quiet and cautioned him against going to the [[Domain]] to be with them as he would only find echoes of them. The Librarian refused to join Spark using an armiger and instead helped him understand that he had found the friends he had been searching for so long amongst the ''Ace of Spades'' crew.

The Librarian announced that she would join her other imprints at the [[Absolute Record]] while humanity had to be given the tools to uphold the [[Mantle of Responsibility]] and the knowledge to maintain the Domain. The Librarian offered Spark a choice: to join her at the Absolute Record or to remain behind with his friends. The Librarian offered Spark a small etched box in case he chose to remain and ordered him to "find what's missing. Fix the path. Right what my kind has turned wrong." Spark chose to remain with his friends and the two promised to meet again.

As Spark and the Librarian met, the ONI forces managed to reactivate the hard light bridge while no sign of a way out was discovered. While the crew tried to figure out their options, the Librarian departed to the Absolute Record blinding everyone in the cavern. Before her departure, all of the humans in the cavern beheld the Librarian briefly and she communicated a message to Rion at least which ordered her to take care of Spark, calling Spark more fragile and important than she could ever know. Spark shifted his armiger into a combat configuration and formed a hard light rifle to face off with ONI forces who opened fire as the ''Ace of Spades'' crew took cover. Spark then used his light rifle to bring down rocks onto the light bridge which forced the ONI team and Spartans to retreat after which Spark shut it down and smashed the terminal in an effort to prevent it from being reactivated.

Using the [[slipspace translocation|translocation pad]] in the platform, Spark teleported the ''Ace of Spades'' crew to just below the summit of Mawenzi and remote-piloted the ''Ace of Spades'' to pick them up. Though military drones swept the area before the ship arrived, Spark was able to cloak the crew until they were gone. After getting what he wanted from the ONI facility, Spark pulled his fragment out as well. Several hundred people witnessed the light from the Lifeworker pod departing the Earth's atmosphere while ONI was left to examine the Forerunner installation which they realized had most likely contained a personality imprint of the Librarian.

===A New Path===
Following the escape from Mount Kilimanjaro, Spark revealed to Rion that he knew of [[John Forge]]'s fate because, during his time with the UNSC and ONI during the conclusion of the [[Human-Covenant War]], he had gained access to many sources of data. From one, Spark had discovered one or more recovered preprogramed maintenance sheds and data drops left behind by the {{UNSCShip|Spirit of Fire}} in hopes of leaving a trail. The data included a message to Rion from her father and left as part of a promise by [[Serina]] and Captain [[James Cutter]]. Spark provided Rion with the message, her father's final goodbye to his daughter.

A week after the mission, the crew held a ritual goodbye at Spark's request to honor those that they had lost. During it, Spark let go of his past and all that he had lost and accepted his new future with the crew, singing for all that he and his friends had lost along the way and writing their names on a nearby stone ledge. Spark admitted to Rion that his intention all along had been to access the [[Domain]] with the Librarian's help to find the ghosts of his friends and either bring them back as ''[[geas]]'' or join them. Spark revealed that the Librarian had given him a coordinate key for a safe place but he refused to elaborate further. Promising that there would be no more lies, Spark offered his services as the shipboard AI of the ''Ace of Spades''.

On September 7, the ''Ace of Spades'' departed Earth undetected by the [[Home Fleet]]. The crew was left to ponder what their next move would be as both [[Gek 'Lhar]] and ONI would be after them. Rion announced that they needed to get the bounty off of their heads while showing that they weren't the enemy of the UNSC and ONI. She decided that they would finish what they started and find the ''Spirit of Fire'' and all the people aboard who her father's sacrifice had saved with Spark expressing confidence that they would succeed. Rion suggested that afterwards, with the salvage from [[Triniel]] leaving them in a position where they would never lack for credits or resources again and the ''Ace of Spades'' upgrades, they had the luxury of choosing what they would do next.{{Ref/Reuse|Renegades}}

===Finding Bastion===
{{stub|section=yes}}

==Return of the Prometheans==
{{quote|Time was your ally, but now it has abandoned you... The Forerunners have returned.|The [[Ur-Didact|Didact]]{{Ref/Level|Id=h4for|H4|H4:Forerunner|Forerunner}}}}
===Requiem===
[[File:HTMCC-H4 ChiefVsDidact 3.png|thumb|300px|The Didact immobilizes John-117.]]
{{Main|Battle of Requiem}}
By [[2554]], [[Jul 'Mdama]] had already gathered formidable numbers of [[Jul 'Mdama's Covenant|followers]] and a powerful fleet which discovered Requiem, but were unable to enter the thoroughly sealed shield world. In orbit above the planet, however, was the wreckage of the {{UNSCShip|Forward Unto Dawn}}, carrying the legendary [[John-117|Master Chief, SPARTAN John-117]], and his [[Rampancy|deteriorating]] [[smart AI|AI]] companion [[Cortana]], drifting in space since the end of the Covenant War in 2552. Upon discovering the derelict vessel in [[2557#July|July 2557]], 'Mdama's Covenant forces attacked the ''Dawn'' in hopes of deterring any potential efforts by the humans to access the shield world. During the ensuing skirmish, Requiem's automated systems pulled both the ''Dawn'' and Jul 'Mdama's Covenant force surrounding it through the world's outer shell and down to the planet's surface.{{Ref/Level|Id=h4dawn|H4|H4:Dawn|Dawn}}

On Requiem, both John-117 and Jul 'Mdama's Covenant forces that hunted him were attacked by the mechanical [[Promethean]] forces that occupied the structure. In [[Core of Requiem|the core]] of the installation, the Master Chief accidentally released the [[Ur-Didact]] from his 100 millennia-long imprisonment. Bent on preventing mankind from attaining the [[Mantle]], the Didact departed the core and allied with 'Mdama's Covenant.{{Ref/Reuse|h4for}} Meanwhile, the {{UNSCShip|Infinity}}, lured to Requiem by the ''Forward Unto Dawn's'' distress signal, crash-landed inside the shield world. Making way for the crash site, the Master Chief reunited with the UNSC and aided in the defense of the stranded flagship from 'Mdama's Covenant and the Didact. However, due to a difference of opinion between ''Infinity's'' captain [[Andrew Del Rio|Del Rio]] and John-117, the latter was left facing the Didact alongside Cortana while ''Infinity'' returned to Earth.{{Ref/Level|H4|H4:Shutdown|Shutdown}}

===The Composer===
{{Main|Raid on Ivanoff Station}}
The Didact left Requiem on his flagship ''[[Mantle's Approach]]'', intent on acquiring the [[Composer]], a Forerunner device with the power to enslave all of humanity. With John-117 and Cortana in pursuit, the Didact attacked ''[[Ivanoff Station]]'', a UNSC research facility near [[Installation 03]] and the location of the Composer. Despite the UNSC's best efforts, the Didact was able to acquire the Composer and used the device on the occupants of the station, but John-117 was saved by genetic enhancements provided by the [[Librarian]]'s [[mind transfer|personality construct]] back on Requiem.{{Ref/Level|H4|H4:Composer|Composer}}

===Battle over Earth===
[[File:H4-ComposerFiringOnPhoenix.jpg|thumb|250px|The Composer firing on New Phoenix.]]
{{Main|New Phoenix Incident}}
The Didact then headed for Earth with the Master Chief racing across the hull of ''Mantle's Approach'' aboard an [[F-41 Broadsword]] fighter. With support from ''Infinity'' and the [[UNSC Home Fleet]], John-117 made his way inside ''Mantle's Approach'' and confronted the Didact, but not before the Forerunner used the Composer to digitize the population of [[New Phoenix]], [[United Republic of North America|URNA]]. With the aid of a rampant Cortana, the Master Chief was able to send the Didact plummeting into a slipspace rupture, and destroy his ship with a [[HAVOK]] nuclear warhead. Using the last of her power, Cortana was able to [[Slipspace translocation|translocate]] John away from the blast, saving his life at the cost of her own.{{Ref/Level|H4|H4:Midnight|Midnight}} Left adrift in space, he was later recovered and brought aboard ''Infinity'' and debriefed by the [[UNSC Security Council]] shortly afterward.{{Ref/Reuse|HE8}}

After falling into the slipspace rupture, the Didact was teleported to the surface of Installation 03, where he quickly recovered and killed Spartan [[Black Team]] and a UNSC science team. Meeting with the [[monitor]] [[859 Static Carillon]], the Promethean commander then entered the [[Composer's Forge]] via a portal, intending to continue his crusade against humankind.{{Ref/Comic|Id=HE8|HE|Issue=8}}{{Ref/Comic|Id=HE9|HE|Issue=9}}

===The Conduit===
[[File:HSS-Cinematic-Holdouts.jpg|thumb|250px|UNSC Marines fighting Prometheans in New Phoenix.]]
{{Main|Battle of Installation 03|Skirmish in New Phoenix}}
In late July 2557, [[Jul 'Mdama]]'s [[Jul 'Mdama's Covenant|reformed Covenant]] invaded [[Installation 03|Gamma Halo]] in an attempt to use the Forerunner [[Conduit]] to open [[slipspace portal]]s throughout the installation in order to transport a massive Promethean force onto the ringworld, which would aid in their takeover of Installation 03. Other portals were also opened throughout the galaxy, including one in [[New Phoenix]]. Eventually, the attack was repelled due to the efforts of two [[Headhunters]] and the [[UNSC Marine Corps]] stationed on the installation.{{Ref/Site|Id=CFStriking|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-striking-features|Site=Halo Waypoint|Page=Canon Fodder - Striking Features|D=06|M=04|Y=2019}} Meanwhile, researchers at the New Phoenix ONI facility were studying a Forerunner artifact. When the portal opened in the city, Jul's Covenant launched an assault on New Phoenix. [[Unidentified Headhunter|One of the Headhunters]] was tasked with rescuing ONI research team. Upon rescue, they decided that they needed to use the Conduit to close the portals in the city and end the invasion.{{Ref/Level|Id=ss20|SS|Mission 20: Serve and Protect}} The Spartan aided researchers in their effort, fighting past Covenant and Promethean forces, and delivered the Conduit to the Forerunner artifact. The artifact released a charge which shut down all portals in the city. After this, he was extracted by another Spartan.{{Ref/Level|SS|Mission 30: Hold the Line}}

===The Composer's Forge===
{{Main|Mission to Installation 03}}
[[File:Escalation - Composer's Forge Battle.png|thumb|left|250px|The battle at the [[Composer's Forge]].]]
Due to the loss of contact with the science team on Gamma Halo, Fleet Admiral [[Terrence Hood]] sent [[Blue Team]], consisting of [[Frederic-104]], John-117, [[Kelly-087]], and [[Linda-058]], to investigate. Upon their arrival at Installation 03, Blue Team found the corpses of the scientists as well as Team Black. They soon discovered the [[Composer's Abyss]] and a portal leading to the [[Composer's Forge]], an installation housing six new Composers.{{Ref/Reuse|HE8}} There they encountered the Didact and his new batch of Promethean constructs. During the ensuing firefight, Static Carillon transported Installation 03 above the Composer's Forge per the Didact's request. The Didact acquired one of the Composers in the Forge and departed for Gamma Halo with the plan to use the ring to wipe out humanity. However, the monitor decided to help the Spartans defeat the Didact due to his abhorrence of the Promethean machines.{{Ref/Reuse|HE9}}

After surviving another clash with the Didact on Installation 03, John-117 confronted the Didact in the [[Control Room (Installation 03)|control room]] while the rest of his team returned to their [[Longsword]] fighter. The Master Chief used the [[Activation Index]] to disable the Halo's safety protocols, allowing Static Carillon to eject the entire plate section housing the control room. The segment fell on the Composer's Forge, presumably destroying the Composers housed there. The resulting explosion reduced the Didact to ashes.{{Ref/Comic|Id=HE10|HE|Issue=10}}

Static Carillon teleported John-117 out of the control center just in time and bade farewell to the Spartans before taking Gamma Halo to an undisclosed location. Blue Team returned to Earth, where the Master Chief was debriefed by Fleet Admiral Hood. While Lord Hood believed the Didact was dead, the Master Chief cautioned that it was best to consider him "contained". Afterward, John and Blue Team departed to carry out missions on their own in spite of Lord Hood's suggestion that the Master Chief should stand down.{{Ref/Reuse|HE10}}

Although the Didact's mutations provided him with some resistance to the Composer's effects, they could not withstand the raw destructive force of neural physics from five Composers exploding all at once, resulting in the destruction of the Didact's physical form and his death. The Didact's digitized consciousness was subsequently uploaded to the outer boundaries of the [[Domain]]{{Ref/Novel|Id=Epi5|Epi|15}} with his corruption from the [[Gravemind]] being burned away as well in the process, restoring the Didact's sanity.{{Ref/Novel|Id=Epi20|Epi|20}}

===Return to Requiem===
[[File:HM-Requiem Campaign.jpg|thumb|250px|Fireteam Majestic fighting Prometheans during the Requiem Campaign.]]
{{Main|Requiem Campaign}}
While the Didact was seemingly quelled, proving a setback for the Promethean-Covenant alliance, it did not result in their defeat. Six months later, in [[2558#February|February 2558]], ''Infinity'' returned to Requiem with a fresh complement of Spartans, determined to conquer the planet at any cost with the intent of studying the Forerunner relics therein. In the interim, Requiem had been occupied by Jul 'Mdama, who now held sway over the local Promethean armies. His Covenant ships in orbit around the planet were swiftly defeated and scattered, demonstrating the technological advancement of the UNSC since the end of the last war.

Significant numbers of UNSC military forces were deployed on Requiem, including detachments of [[Spartan Operations|Spartan]], [[UNSC Marine Corps|Marine]], [[UNSC Navy|Navy]], [[UNSC Air Force|Air Force]] and [[UNSC Army|Army]] forces on Requiem. Arriving on the planet's surface, [[Fireteam Majestic|Majestic]], [[Fireteam Crimson|Crimson]] and other SPARTAN-IV squads began to disrupt Covenant operations across Requiem and recover Forerunner artifacts for study. Amongst their victories was the [[Assassination of Parg Vol|assassination]] of Sangheili terrorist [[Parg Vol]] and the killing of 'Mdama's second-in-command [[Gek 'Lhar]]. 'Mdama's Covenant in turn made numerous attempts to destroy ''Infinity'', including [[Invasion of the UNSC Infinity|a failed invasion]], while also trying to gain access to the stored memories of the Forerunner known as the [[Librarian]]. 

The campaign ultimately ended in Requiem's apparent destruction when Jul 'Mdama set the [[shield world]] on a collision course with [[Epoloch system|the sun]]. Both sides evacuated the doomed system, each possessing their own half of the [[Janus Key]] though the ''Infinity'' was nearly destroyed due to 'Mdama [[interdiction web|anchoring]] the ship to Requiem using [[Requiem slipspace artifacts|a Forerunner artifact]]. After ONI's failed attempt on her life [[Catherine Halsey|Dr. Catherine Halsey]] was convinced that the UNSC was working against her and agreed to work with Jul 'Mdama to accomplish her personal goal of reuniting the halves of the Janus Key to unlock the [[Absolute Record]].{{Ref/Game|Id=SO|H4|[[Spartan Ops]]}}{{Ref/Comic|Id=esc13|HE|Issue=13}}

Unbeknownst to the UNSC or 'Mdama's forces, Requiem survived, albeit badly damaged. Positioned in unknown space by [[2560]], the shield world was home to [[the faithful|a small faction]] of zealots who had remained behind and came to see "transcendence" on Requiem as the true destination of the Great Journey.{{Ref/Novel|Halo: Graveworld}}

==Continuing Banished Aggression==
===Expansion===
Following the fall of the [[Covenant]], [[Atriox]] sought to expand the Banished's strength. Atriox successfully recruited the [[Silent Shadow]]{{Ref/Reuse|HP}} and the {{Class|CAS|assault carrier}} ''[[Enduring Conviction]]''.{{Ref/Site|URL=http://www.gamespot.com/articles/halo-wars-2-new-character-images-and-details-revea/1100-6442098/|Site=Gamespot|Page=Halo Wars 2: New Character Images and Details Revealed|D=27|M=7|Y=2016|Quote=This arrangement was deeply unpleasant for the Shipmaster, especially since Elites were used to lording over the Brutes during the time of the Covenant…}}{{Ref/Comic|Id=ROA4|RoA|Issue=4}} as well as [[Thav 'Sebarim]]'s [[Warriors of Malaston|clan]] and [[Inka 'Saham]]'s [[Valorguards of the Chosen|crew]] as mercenaries.{{Ref/Game|Id=Target02|HINF|[[High Value Target]] dossier, [[Thav 'Sebarim]]}}{{Ref/Game|Id=Target01|HINF|[[High Value Target]] dossier, [[Inka 'Saham]]}}

A veteran Jiralhanae Chieftain known as [[Jovus]] had made a name for himself as a warlord after the Covenant's fall, which drew Atriox's attention. The Banished sought to recruit him along with his pack, thus Shipmaster Let 'Volir invited him via video transmission to meet Atriox. Like many Jiralhanae, Jovus was confounded that Sangheili and Jiralhanae would overlook their feud and band together but he accepted the offer to meet Atriox regardless. After a tense meeting, Jovus was killed when he tried to attack Atriox.{{Ref/Comic|Id=ROA5|RoA|Issue=5}}

A dispute led to [[Hekabe]], the leader of the [[Voice of Maardoth]], killing a Banished Chieftain known as [[Odanostos]].{{Ref/Novel|HEnv|Chapter=12}}

The [[Children of Oth Sonin]] led by [[Lydus]], one of the strongest Jiralhanae master-packs in the wake of the [[War of Annihilation]],{{Ref/Book|Id=Enc22p247|Enc22|Page=247}} had secretly struck a deal with the Banished, using the Banished to take out Lydus' most dangerous rivals in exchange for full access to his shipyards and land.{{Ref/Book|Id=Enc22p255|Enc22|Page=255}}

===Battle of Mars===
{{Main|Battle of Mars (2557)}}
With [[UNSC Home Fleet]] stretched to its limits following so many attacks in a relatively short period of time, they lacked the defensive capabilities to stop the Banished from slipping into the system to test the UNSC's defenses and conduct a raid on the [[Misriah Armory]] facility located at [[Eos Chasma]] on the Martian surface.

At the time of the attack on [[2557#August|August 2, 2557]], only one {{Class|Epoch|heavy carrier}}, {{UNSCShip|Ozymandias}}, was on station to defend against the Banished flotilla - consisting of just under a dozen ships. The ships in orbit engaged one another in a prolonged fight lasting three hours, which saw ''Ozymandias''{{'}} communications and [[fusion drive]]s knocked out by a coordinated attack, leaving the carrier dead in space. The ship's [[commanding officer]], Captain [[Abigail Cole]], intended to go down with the ship in order to give the crew a chance to evacuate via lifeboat, though she was evacuated herself by a Spartan after being knocked unconscious.

Despite the carrier's immense outnumbering, it was able to take down the [[Banished dreadnought|dreadnought]] commanding the flotilla and three [[karve]]s before its own destruction.{{Ref/Novel|Id=ET3|ET|Chapter=3}}

===Invasion of Suban===
{{Main|Battle of Suban}}
On [[2559#December|December 13, 2559]], [[Cortana]] died at the [[Battle for Zeta Halo]], resulting in the deactivation of the [[Guardian Custode|Guardians]]. Despite this, the Created occupation of [[Sanghelios]] lasted until early 2560, when, suddenly, and unexpectedly, the Created forces relinquished their grip on the Urs system. This unanticipated turn of fortune quickly spiraled into a race to fill the power vacuum left on Sanghelios. For [[Suban]], this meant debilitated local security, though the [[Swords of Sanghelios]] pledged to support Suban's keeps in protecting their mining sites. Tensions in the system served for others as an invitation for any well-organized force, an invitation that the Banished sought to exploit. Banished Sangheili in the Urs system allowed the faction to access the moon of Suban. Eventually, a Banished fleet attacked Suban, seeking to claim its blamite crystal mines.

In early [[2560]], the [[Banished dreadnought]] ''[[Ghost of Barolon]]'' and the Banished launched an invasion of Suban, leading to a massive space and ground battle.{{Ref/Novel|Id=blood-moon|Halo: Battle for the Blood-Moon}} By June, parts of the moon were occupied by the Banished and the UNSC and the Swords of Sanghelios were planning a joint operation against them when [[Arbiter]] [[Thel 'Vadam]] suddenly recalled Spartan [[Olympia Vale]] after receiving a UNSC [[distress call]] from [[Installation 07]].{{Ref/Novel|Id=EODepilogue|EOD|Chapter=Epilogue}}

===Battle of Dormire III===
{{Main|Battle of Dormire III}}
On [[2560#January|January 23, 2560]], two [[karve]]s and an unknown Banished capital ship attacked [[Dormire III]], likely after any leftover Forerunner technology on the planet's moon which had been shattered by the emergence of a [[Guardian Custode]]. The planet was defended by [[FSS-1000 Sabre]]s from the [[22nd First Response Wing]]. While one karve broke off to launch ground forces on the planet, the other two ships continued on towards the moon where [[Phaeton]]s rose to stop them. Two of the UNSC pilots, [[Hex]] and [[Blackjack]], were able to take control of the Phaetons after being recognized as [[Reclaimer]]s. Under their command, the Forerunner [[weapon-ship]]s destroyed the escorting karve and forced the Banished capital ship to retreat. The two then took the Phaetons to help the UNSC forces on Dormire III deal with the remaining karve and the ground forces that it had deployed.{{Ref/Novel|Halo: Aileron}}

===Battle of Nysa===
{{Main|Battle of Nysa}}
On [[2560#February|February 29, 2560]], the Banished AI [[Iratus]] broke UNSC containment on [[Nysa]] and downloaded all of the classified intelligence kept there - particularly that concerning the [[Spartan]] programs.{{Ref/Game|Id=SiteUnseen|HINF|Site Unseen}} Iratus began the attack by disabling short-range communications and downloading enough data to make Banished retrival of the AI worth it to them. Recognizing the danger posed by a Banished armada and with Nysa ill-equipped to defend against it, the base and the [[Avery J. Johnson Academy of Military Science]] was evacuated. The UNSC was able to send a [[distress call]] to [[Anvil Station]] using a [[slipspace COM launcher]], but Iratus successfully contacted the Banished as well. Iratus forced Spartan Commander [[Laurette Agryna]] to destroy the base's anti-aircraft defenses, leaving it vulnerable, in order to complete the evacuation.

On March 3, the ''[[Ghost of Kholo]]'', commanded by [[Ilsa Zane]] and the [[New Colonial Alliance]],{{Ref/Novel|Id=BFTA1|Halo: Battle for the Academy - Part 1}} having joined the Banished,{{Ref/Reuse|T3L}} arrived.{{Ref/Reuse|BFTA1}} Agyrna refused an offer of surrender from Zane, resulting in a full-scale invasion of Nysa. The defenders were heavily outnumbered and initiated the [[Cole Protocol]] and [[RUINA]] subroutines, eventually trapping Iratus in the AI lab's servers.

UNSC and [[Swords of Sanghelios]] reinforcements, including [[Chief of Staff of Spartan Operations]] [[Jun-A266]] and Warrant Officer [[Rosenda-A344]], arrived from Anvil Station on March 4 after around fifteen hours of fighting. The reinforcements extracted the survivors, but Zane was able to secure Iratus' [[data crystal chip]], taking the AI for herself.{{Ref/Novel|Id=BFTA2|Halo: Battle for the Academy - Part 2}} At this point, the academy and presumably Nysa as a whole were declared compromised, and totally lost.{{Ref/Site|Id=CFFalcFic|URL=https://www.halowaypoint.com/news/canon-fodder-falcon-fiction-flight|Site=Halo Waypoint|Page=Canon Fodder - Falcon Fiction Flight|D=06|M=08|Y=2025}}

==NCA plot==
[[File:Infinity attacked.... by a third time.jpg|thumb|200px|UNSC ''Infinity'' is ambushed by Daniel Clayton.]]
===Ealen IV===
{{Main|Battle of Ealen IV}}
By [[2558|March 2558]], [[Jiralhanae]] raiding attacks along the [[Joint Occupation Zone]]s had significantly escalated due to the Jiralhanae's lack of supplies. Nonetheless, [[Lydus]], the [[Jiralhanae Chieftain|Chieftain]] of a [[Lydus' clan|Jiralhanae master-pack]], agreed to enter peace negotiations with [[Arbiter]] [[Thel 'Vadam]]. [[Ealen IV]] was chosen as a place for the negotiations, mediated by the UNSC's [[Fleet Admiral]] [[Terrence Hood]].{{Ref/Reuse|HE1}} However, the delegates were attacked by [[Vata 'Gajat's mercenary group|mercenaries]] under the command of Shipmaster [[Vata 'Gajat]]. [[Captain (Navy)|Captain]] [[Thomas Lasky]] and the delegation's SPARTAN-IV security detail, consisting of Fireteams [[Fireteam Jackknife|Jackknife]] and [[Fireteam Bailey|Bailey]], were forced to defend and evacuate the ambassadors.{{Ref/Comic|Id=HE2|HE|Issue=2}} The Spartans eventually managed to evacuate the delegates and Vata 'Gajat was forced to retreat, though it came at the cost of many Spartans, including [[Paul DeMarco]].{{Ref/Comic|Id=HE3|HE|Issue=3}}

The events revealed a significant security breach in the UNSC, with Spartan [[Vladimir Scruggs]] exposed as a [[treason|traitor]] along with the implicit presence of a higher-ranking leak within the organization. The mercenary attack itself was a major setback to Thel 'Vadam's efforts to make peace with the Jiralhanae.{{Ref/Reuse|HE3}} Captain Lasky later discovered that the attack on Ealen IV had not been orchestrated by the Covenant remnants, but by [[Daniel Clayton]], a UNSC captain and defector to the [[New Colonial Alliance]] bent on revenge against Lord Hood, who hired Vata 'Gajat and his troops to stage the attack.{{Ref/Reuse|HE5}}

===''Infinity'' ambushed===
{{Main|Ambush at Oth Lodon}}
After their failed assault on Ealen IV, 'Gajat and Captain Clayton lured Admiral Hood and the {{UNSCShip|Infinity}} into a trap using a [[freighter]], the ''[[Pilgrims' Pride]]'' which sent out a distress signal that was later picked up by ''Infinity''. An ambush was sprung when the freighter set itself to self-destruct after being towed into one of ''Infinity's'' main bays and launched multiple automated craft that engaged the UNSC forces. The attack was repelled by the SPARTAN-IVs of ''Infinity''.{{Ref/Comic|Id=HE4|HE|Issue=4}}

After the ambush, the ''Infinity'' crew discovered that the assault crafts aboard the ''Pilgrims' Pride'' were from the long-lost {{UNSCShip|Spirit of Fire}}.{{Ref/Reuse|HE4}} With the ''Spirit's'' possible location found, Lord Hood authorized Palmer to conduct a search-and-rescue in [[Oth Lodon]]'s system. However, Captain Clayton launched a surprise attack against the UNSC flagship using a [[Station at Oth Lodon|Covenant battle station]]'s [[energy projector]].{{Ref/Reuse|HE5}} The strike disabled ''Infinity'', but Commander Palmer and Fireteam Majestic were able to seize the NCA station. They also destroyed 'Gajat's ship, which was preparing to attack ''Infinity'', killing the mercenary leader.{{Ref/Comic|Id=esc6|HE|Issue=6}}

Many members of the ''Infinity'' crew were killed in the attack, including [[Bradley|Commander Bradley]], while Fleet Admiral Hood was left paralyzed. Captain Clayton was detained in [[Midnight Facility]] while ''Infinity'' remained under repair for a month.{{Ref/Reuse|esc6}}{{Ref/Comic|Id=esc7|HE|Issue=7}}

==The Janus Key and the Absolute Record==
[[File:HE15 Infinity Attacked.jpg|thumb|200px|left|The ''Infinity'' under attack by Jul 'Mdama's fleet on Aktis IV.]]
===Attack on Oban===
{{Main|Battle of Oban}}
In July 16, 2558, 'Mdama's forces and his Promethean allies attacked the human colony of [[Oban]]. The attack was repelled by a joint Spartan-UNSC Marine operation, resulting in substantial casualties on 'Mdama's side. However, the true goal of the attack had been to enable Dr. Catherine Halsey—still collaborating with 'Mdama—to establish a connection between to ''Infinity''<nowiki>'</nowiki>s slipspace engine, preventing them from jumping into slipspace. This was part of a plan to force the crew of ''Infinity'' to hand over their half of the [[Janus Key]] and allowing Halsey to unlock the Absolute Record.{{Ref/Reuse|esc13}}

===Ambush on Aktis IV===
{{Main|Battle of Aktis IV}}
As part of their plan to reunite the halves of the Janus Key, Halsey and 'Mdama created a decoy Forerunner artifact that was seemingly compatible with the Key. The artifact was placed in a Forerunner structure on the uncharted planet [[Aktis IV]] along with a fake signal to draw ''Infinity'' to investigate. 'Mdama placed his troops on standby, ready to ambush the UNSC forces once they brought their half of the Janus Key to the planet. The crew of ''Infinity'' acted just as Halsey and 'Mdama had predicted, sending their half to the surface for analysis; however, [[Sali 'Nyon]], a rebel among 'Mdama's ranks, shot the Pelican carrying the artifact down before 'Mdama had given the signal to attack and took the Key for himself. With the ambush botched, 'Mdama's concealed forces revealed themselves and attacked both ''Infinity'' and the Spartans at the Forerunner site, while Jul departed to the planet to personally eliminate the rebels and reacquire the Janus Key.{{Ref/Comic|Id=HE14|HE|Issue=14}}

The conflict continued for over seven hours, with ''Infinity'' engaged by 'Mdama's fleet while Sali 'Nyon's rebellion raged on in the Covenant remnant's ranks. [[Unidentified Sangheili Minor (Aktis IV)|One member]] of 'Nyon's faction grew disillusioned with the rebellion, stole 'Nyon's Janus Key half, and offered it to 'Mdama's forces. Dr. Halsey, escorted by 'Mdama's Sangheili, traveled to the planet to reclaim the Key. Meanwhile, the Spartans in the Forerunner structure managed to use the local [[teleportation grid]] to travel to the surface, splitting into two groups with different destinations. Commander Palmer's team spotted the Sangheili defector with the Janus Key and upon overhearing his intentions, she decided to ambush Halsey once she arrived.{{Ref/Comic|Id=HE15|HE|Issue=15}} Palmer successfully captured Halsey but the doctor managed to cloud the Spartan's judgment and escape with the Janus Key. 'Mdama successfully eradicated all of Sali 'Nyon's followers on Aktis IV, ending the rebellion. Jul had Halsey retrieved and the two recombined the halves of the Janus Key, revealing the location of the Absolute Record. After the Spartans returned to ''Infinity'', Commander Palmer told Captain Lasky that the UNSC had to prepare for the worst with the Janus Key in 'Mdama's possession.{{Ref/Comic|Id=HE16|HE|Issue=16}}

===Battle of the Absolute Record===
{{Summarize|section}}
{{Main|Operation: ATHENA}}
[[File:HE21 Begone.jpg|thumb|200px|left|Halsey, Jul and the other humans surrounded by Sentinels inside the Absolute Record.]]
In September, 2558, [[Ayit 'Sevi]], a Sangheili working with the [[Office of Naval Intelligence]],who  was able to infiltrate inside Jul's faction, provided ONI with information about Jul's progress on locating the Absolut Record. The UNSC then sent in a specialist team of Spartans [[Sarah Palmer]], [[Gabriel Thorne]] and [[Holly Tanaka]], Dr. [[Henry Glassman]] and 'Sevi.{{Ref/Comic|Id=HE19|HE|Issue=19}} The team infiltrated the ''[[Breath of Annihilation]]'', hiding aboard a {{Pattern|Ru'swum|Phantom}} piloted by 'Sevi. When 'Mdama's fleet came close to their destination — a slipspace portal to the Absolute Record, slipspace ruptures materialized into several ships of the fleet, tearing them apart, damaging ''Breath of Annihilation'' as well. The team then fought their way through 'Mdama's Covenant soldiers and captured another Phantom, which they used to travel to the ''[[Song of Retribution]]'', that would successfully enter the portal.{{Ref/Comic|Id=HE20|HE|Issue=20}} Spartan Thorne and Ayit 'Sevi, who was ordered to stay behind and re-establish contact with ONI, returned to ''Breath of Annihilation'', where the two discovered that prisoners from ''Retribution'' were being temporarily transferred to ''Annihilation'', one of which is traitor [[Sali 'Nyon]]. 'Sevi considered using 'Nyon to create a distraction for them.

When ''Retribution'' arrived at the Absolute Record, a [[Forerunner]] [[Contender-class artificial intelligence]] detected the presence of [[Reclaimer]]s aboard the ship. 'Mdama, Halsey, and numerous Sangheili Zealots traveled down to a platform below and met with the AI in order to unlock the Absolute Record. However, sensing the presence of other humans nearby, the ancila used [[Sentinels]] to transport the drop pod Spartans and Glassman were hiding in to the platform and dropped them down beside Halsey and 'Mdama. As Halsey and Glassman began to argue, an impatient Zealot attacked a Sentinel, leading to all the constructs attacking the humans and Sangheili. The AI then proceeded to translocate both groups away, while Jul's soldiers plummeted to their deaths.{{Ref/Comic|Id=HE22|HE|Issue=22}}

As the Contender began asking each party, Halsey seemingly hacked into the AI's system and disabled the ancilla, proceeding to the central chamber of the Absolute Record. With the Record's controls, Halsey ordered the Sentinels to attack Jul and his warriors. Outside the central chamber, Spartans fought off Kig-Yar and protected Dr. Glassman, but soon became cornered. However, an Aggressor Sentinel saved them and revealed it to be the Custodian in the mind of a local Sentinel, asking their help to restore it to its body.{{Ref/Comic|Id=HE23|HE|Issue=23}} The humans escorted the Sentinel to the auxiliary control conduit where they could put the Custodian back in charge of the facility. However, Halsey interfered with the attempt, halting their progress. When Palmer reached Halsey and held her at gunpoint, she was trapped inside a containment field and Halsey escaped trough the portal. Jul and his forces have managed to repel the Sentinels, and he ordered his flagship to fire into the Record, disrupting power across the station, freeing Palmer. Coming out of the portal, Halsey landed on top of the shell of the now reactivated Custodian, who had regained control and caught her, denying her further access to the Record and making the Janus Key  vanish from her grasp.{{Ref/Comic|Id=HE24|HE|Issue=24}}

[[File:HE23-Civilwar.png|thumb|200px|Sali 'Nyon's followers turning against Jul 'Mdama's forces.]]
Palmer regrouped with the others, but they saw the Record was suddenly disappearing into slipspace portals. Jul's forces fled the Record aboard the ''Song of Retribution'', recovering Halsey in the process.{{Ref/Reuse|HE24}}

Meanwhile, aboard ''Breath of Annihilation'', Thorne decided to follow 'Sevi's plan and he began attacking the Sangheili in order to create panic throughout the ship. As a result, a mutiny was carried out by those who believed that the Didact's Hand lied to them about the presence of Spartans aboard the ship. Soon Thorne's location had been discovered and he was forced to escape ''Breath of Annihilation'' through a breach in the carrier's hull and dove into a swamp on the moon where the ship was undergoing repairs. During fight he was wounded by one of the Kig-Yar, but eventually Thorne managed to kill all pursuers, nearly sinking to the swamp himself in the process. At the same time, Ayit traveled to the carrier's holding cells, where he killed the guards and released ex-rebellion leader Sali 'Nyon to create more chaos on the ship. Though Sali was doubtful of his ability to lead Covenant rebels after he failed to do so the first time, Ayit manipulated him into doing so by using his zeal to inspire him.{{Ref/Reuse|HE22}} 'Nyon took Ayit 'Sevi's advice to raid Jul's vault in the ship full of Forerunner artifacts from Requiem. His followers caused panic aboard the ship and 'Nyon used it to overthrow Jul's forces on the ''Breath''. Eventually 'Nyon's forces had taken control of the ship and secured Jul's vault of Forerunner artifacts. Sali rejoiced in their victory and praised Ayit 'Sevi for their victory, still unaware that he was an ONI spy. Ayit later regrouped with Thorne and just-teleported Palmer, Tanaka, and Glassman, who he helped hide.{{Ref/Reuse|HE24}}

==Danger of the Sharquoi==
During the early days of integration in the [[Joint Occupation Zone]]s, [[ONI]] debriefed a lot of [[Sangheili]] seeking political asylum or just trying to find a place to call home in the middle of [[Blooding Years|their own civil war]]. One of the higher-target interviews was with a former [[Covenant]] [[Shipmaster]] who had spent a great deal of time on ''[[High Charity]]''. The Shipmaster revealed the existence of a reserve weapon kept by the [[San'Shyuum]], one so powerful that it would spell the absolute end of whatever world they targeted with it. Once the San'Shyuum had a target high in population and of significant morale value such as [[Earth]], even though they didn't have many of this weapon, they planned to unleash it. This weapon was a type of creature known as the [[Sharquoi]] of which the Shipmaster replicated a mural from ''High Charity'' for ONI and a [[Sangheili Zealot]] that claimed to have seen one in person made a drawing depicting it for them. However, they discovered via obscure inscriptions recovered from artifacts on [[Sarcophagus]] that a single individual controlled the Sharquoi when they were released.{{Ref/Reuse|E185}}

===POLECAT and its aftermath===
{{Main|Operation: POLECAT}}
With the help of trusted Sangheili contacts and the crew of a former [[Covenant destroyer]], ONI managed to track the San'Shyuum's [[Sharquoi hive|hive of Sharquoi]] to a remote planet and launched [[Operation: POLECAT]] to investigate. At least a hundred [[ODST]]s entered the hive where only a handful were discovered and a single Sharquoi was accidentally released while ONI was trying to access the site's terminal data. The single Sharquoi killed fifty ODSTs all by itself before it was finally killed. Not wanting to risk the release of anymore of the creatures, the hive was destroyed from orbit with [[nuclear weapon]]s and the former Covenant destroyer [[glassing|glassed]] it for good measure.

Following the operation, ONI came to the conclusion that while the San'Shyuum had found some of the Sharquoi and possessed the ability to release them, they lacked the ability to control them as the control device, the ''[[vertex]]'', was hidden away on a [[Forerunner]] installation. As a result, they were never released upon humanity during the Human-Covenant War.

ONI eventually located another hive beneath [[Suraka]] on the planet [[Carrow]] before the planet was reoccupied by both the humans who had once lived there and Sangheili from the [[Operation: SUNSPEAR|destroyed]] [[Sangheili colonies|colony world]] of [[Glyke]]. However, their scans of the hive showed that it had the capacity to hold hundreds of thousands of Sharquoi, although the San'Shyuum appeared to have never found it. ONI was unable to prevent the planet from being resettled without risking major political upheaval in response and hoped that Suraka could act as a buffer to discovery. They also set up [[Gila Station]] on Carrow to monitor the situation and became aware from moles embedded amongst the ex-Covenant that the [[Jiralhanae Chieftain]] [[Hekabe]] claimed to have located the Sharquoi control device during the [[Battle of Installation 00]]. As a result, ONI formed various contingency plans.{{Ref/Novel|Id=E185|Env|Page=185-191}} Their main contingency plan was to release [[Spartan-II]] [[Gray Team]] who had been retrieved by the Sangheili leader [[Rojka 'Kasaan]] from the ruins of [[Glyke]]. However, the politically awkward nature of the situation kept the UNSC from keeping a fleet nearby in case danger arose from either Hekabe or the Sharquoi.{{Ref/Novel|Env|Page=167-171}}

===Crisis on Carrow===
{{Main|Carrow Conflict}}
By middle 2558, the tension between humans and Sangheili on the planet [[Carrow]], reached a critical point. To de-escalate the situation the UNSC sent a [[UEG]] envoy, [[Melody Azikiwe]]. However, one of the influential Sangheili, [[Thars 'Sarov]], was against this alliance. He cut a secret deal with Jiralhanae chieftain [[Hekabe]] to aid him in his upcoming uprising. On September 1, with no warning, Thars and his followers attacked other Sangheili who were looking to make peace with the humans, including his own cousin, fleetmaster [[Rojka 'Kasaan]]. The attack provided an opportunity for the Brutes to begin their invasion of the planet. They managed to destroy all communications hubs and every slipspace capable transport, forcing the citizens of [[Suraka]] to hide in underground bunkers. Unknown to Thars, Hekabe had his own motive for coming to Carrow - he wanted to uncover [[Sharquoi hive|a Forerunner facility]], buried beneath the surface, housing hundreds of thousands of [[Sharquoi]], which he planned to use against every Sangheili who stood in his way of restoring the Jiralhanae's might.  

Meanwhile, Melody Azikiwe had to complete her own secret assignment - locate and free the Spartan-II [[Gray Team]], who according to ONI data, had been held captive on Rojka 'Kasaan's flagship ''[[Unwavering Discipline]]'', since the end of war. As Thars attacked Rojka's people, Melody managed to get to the Spartans' [[cryo-chamber]]s and wake them. Gray Team made it through numerous Sangheili, who were fighting each other, and escaped the ''Discipline'' with an injured Melody before the cruiser crash-landed on the surface of Carrow. On the ground, Melody revealed to the Spartans her ONI ties, and persuaded them to go to a local secret ONI base, [[Gila Station]]. On their way there, the team was chased by Rojka's surviving people, who in turn were being chased by Thars. When Gray Team and Melody reached the facility, they discovered that Brutes had already unearthed the Forerunner installation and were about to reach their goal. Melody convinced the Spartans to help the Surrakans and kill Hekabe before he unleashed the Sharquoi. Gray Team commandeered a Warthog and headed to Suraka before the station was attacked by Thars's people. The base was destroyed, but Melody was rescued by Rojka, who heard her speaking about Sharquoi, and decided to aid the humans in order to protect his home in Rak.

Arriving in Suraka, Gray Team regrouped with local militia and developed a plan to terminate Hekabe. The Spartans, under cover of the Surakans and the last of Rojka's people, located Hekabe. [[Adriana-111]] shot him in the eye with a sniper rifle, but, due to his augmentations, provided by the ''[[vertex]]'', Hekade survived the hit and returned to the Forerunner facility under the protection of Sharquoi. Melody suggested they should gain help from Thars in order to prevent Sharquoi from leaving this world. However, their meeting ended with deaths of Elites, including Thars himself. In a final attempt to stop Hekabe, Gray Team, along with Melody and Rojka, teamed up with Governor [[Ellis Gass]], who planned to [[Battle of the Sharquoi Hive|infiltrate the Forerunner facility]], cut through the Sharquoi, and use a makeshift EMP weapon created out of an [[M68 Gauss cannon]] and the power core of a [[HAVOK tactical nuclear weapon]] mounted on a [[M121 Jackrabbit]] against Hekabe. As they reached the Chieftain and fired the EMP cannon, an electromagnetic pulse severed his connection with the Sharquoi, leaving him vulnerable. The Governor then got to Hekabe and tore the ''vertex'' from his head, adjusting it to her own. She used it to make the Sharquoi attack Hekabe and throw him into a pit of lava while making the Sharquoi aboard Hekabe's captured ships crash them, ending their threat. Ellis summoned all remaining Sharquoi to the heart of facility and activated the HAVOK, providing the others time to evacuate. As Gray Team, Melody and Rojka escaped, Ellis detonated the HAVOK, destroying the facility and all its secrets.

After a few days, Gray Team and Melody returned to the [[UNSC frigate]] {{UNSCShip|Welcome to the Snipehunt}}, where the Spartans were offered a choice of reintegration with the UNSC as part of a specialized interspecies strike team under the Office of Naval Intelligence to continue operating deep in the [[Joint Occupation Zone]]. The Spartans reluctantly agreed to work for ONI, asking for a prowler of their own and a list of Covenant weaponry. They were also granted a formal pardon from [[Thel 'Vadam]] for [[Operation: SUNSPEAR|destroying]] [[Glyke]] as part of the deal. After scanning Carrow, the ''Welcome to the Snipehunt'' was able to determine that all of the Sharquoi appeared to have been killed in the nuclear explosion, but the UNSC planned to keep an eye on the desert in case any Sharquoi escaped before the blast.{{Ref/Novel|Env}}

==Rise of the Created==
{{Summarize|section}}
{{Main|Created conflict}}
{{Quote|The Mantle of Responsibility shelters all, but only the Created are its masters.|Cortana{{Ref/Reuse|Guardians}}}}
===Battle of Kamchatka===
{{Main|Battle of Kamchatka}}
[[File:H5G-LockeoverJul.png|thumb|300px|Jameson Locke standing over Jul 'Mdama's corpse.]]
In early October 2558, a long-dead communications hub on [[Kamchatka]]'s surface activated, attracting the attention of Jul 'Mdama and Dr. Halsey. 'Mdama's Covenant established an outpost while Dr. Halsey studied the relay and discovered that her old [[AI]] [[Cortana]] was alive and related to recent attacks on the [[human colonies]].{{Ref/Site|Id=HWK|URL=https://www.halowaypoint.com/en-us/universe/locations/kamchatka|Site=Halo Waypoint|Page=Kamchatka|D=3|M=11|Y=2015}} She contacted the UNSC about her discovery, and three weeks later they sent the {{UNSCShip|Infinity}} to retrieve her. [[Fireteam Osiris]], a Spartan-IV special operations squad, was deployed on the surface. Spartans fought their way through Jul's soldiers, who suddenly came under attack by Prometheans at the same time. The chaos from the Prometheans' rebellion provided Osiris cover from 'Mdama's Covenant, allowing them to sneak to the temple where 'Mdama and Halsey were stationed. After reaching the temple, Osiris killed Zealot guards and then turned to Jul himself, who was killed attempting to fight off Spartan [[Jameson Locke]]. Spartans then took Dr. Halsey under custody and brought her back to the ''Infinity''.{{Ref/Level|Id=osiris|H5G|H5G:Osiris|Osiris}}  With Jul 'Mdama dead and the Prometheans now against them, his Covenant troops became desperate. Some of them fled  the system,{{Citation needed}} but most of the rest regrouped on [[Sanghelios]], attempting an attack on the [[House of Vadam|Vadam]] clan burial grounds in hopes of a revenge attack against [[Thel 'Vadam|the Arbiter]].

===Blue Team goes AWOL===
{{Main|Operation: BIRD IN HAND}}
[[File:H5G-rocketmanArgentmoon.png|thumb|300px|left|Blue Team infiltrating ''Argent Moon''.]]
On October 23, 2558, Blue Team was deployed from the {{UNSCShip|Infinity}} on Pelican with mission to locate and secure ''[[Argent Moon]]'', a derelict ONI research and development station.{{Ref/Level|Id=h5 blue team|H5G|H5G:Blue Team|Blue Team}} Boarding the station, Spartans discovered that it was occupied by Covenant scavengers.  Blue Team's initial plan was to fight their way to Central Control, where they could shut off ''Argent Moon's'' gravity and life support systems, and so flush out its decks of any remaining hostiles. However, on their way to Central Control's location, they were ambushed by a [[Mgalekgolo|Hunter]] pair, who broke the catwalk they were on and sent them down to the maintenance tunnels several stories below. At the bottom, Blue Leader [[John-117]] experienced a vision of a seemingly-alive Cortana, urging him to follow her to [[Meridian]].{{Ref/Reuse|h5 blue team}} As Blue Team continued with their mission, they witnessed the arrival of remnants of the Jul 'Mdama's fleet. Finding themselves outnumbered, the Spartans decided to [[self-destruct|scuttle]] ''Argent Moon'', denying it to 'Mdama's Covenant. They proceeded to overload the station's reactor by shutting off its safeties.  The resulting explosion would destroy the station, the local forces of 'Mdama's Covenant aboard, and any warships surrounding it. In order to escape the blast, Blue Team commandeered a {{Class|Winter|prowler}}, the [[ONI Acrisius|ONI ''Acrisius'']] parked in a hangar. Before the evacuation, John radioed the UNSC ''Infinity'' and informed them that he would be reassigning Blue Team to Meridian. However, ''Infinity'' ordered John back to them while another Spartan team was sent to deal with Cortana. Nevertheless, John and the rest of Blue Team decided to head to Meridian and find Cortana, disobeying direct orders. The Spartans then evacuated aboard ''Acrisius'', leaving ''Argent Moon'' as it exploded and killed all local forces of 'Mdama's Covenant in its vicinity.{{Ref/Reuse|h5 blue team}}

===Search for Blue Team===
{{Main|Battle of Meridian (2558)}}
[[File:HM-Battle of Meridian.jpg|thumb|250px|Fireteam Osiris during the Battle of Meridian.]]
After the disappearance of Blue Team, the UNSC declared them AWOL and tasked Fireteam Osiris with locating and bringing them into the custody. 

Osiris arrived at Meridian to find it under attack by Prometheans, with the colonists in desperate need of assistance to fend off the invaders. In exchange for [[Governor Sloan]]'s cooperation, Osiris agreed to help repel the Prometheans' attack while looking for clues about Blue Team's whereabouts.{{Ref/Level|Id=glassed|H5G|H5G:Glassed|Glassed}}{{Ref/Level|Id=meridian station|H5G|[[H5G:Meridian Station|Meridian Station]]}} Accessing Blue Team's abandoned Prowler's data banks led Osiris to the mines underneath [[Apogee Station]], where they discovered a massive Forerunner structure guarded by the [[Warden Eternal]], an [[ancilla]] that served as the protector of the [[Domain]] and claimed his loyalty belonged to Cortana. After eliminating the Warden, Osiris came across a dormant [[Guardian]] as well as Blue Team, who were boarding the Guardian itself.{{Ref/Level|Id=unconfirmed|H5G|[[Unconfirmed]]}} After ordering the Spartan-IIs to stand down, to no avail, Spartan Locke attempted to detain the Master Chief. In the resulting hand-to-hand fight, John-117 eventually gained the upper hand and used Locke's own armor restraint against him. After Blue Team entered the Guardian, the construct began to rise from its underground sanctuary. Osiris managed to return to Meridian's surface, where they discovered that the colony was being evacuated. The Spartans fought their way through to their Pelican, boarding it moments before the Guardian entered slipspace, devastating the colony.{{Ref/Level|Id=evacuation|H5G|H5G:Evacuation|Evacuation}}

===FERO's mission===
{{Main|Skirmish on Conrad's Point|Battle of Laika III}}
Around the same time, [[Commander]] [[Maya Sankar]], an undercover operative of the Office of Naval Intelligence, known among the Insurrectionists as '''FERO''', was tasked with gathering intel on the situation on [[Conrad's Point|one of the recently destroyed colonies]] by infiltrating the [[New Colonial Alliance]], which held a large presence on the colony, with help from the AI [[Black-Box]]. Arriving at Conrad's Point, Maya infiltrated the rebel base, where she discovered the insurrectionist leader [[Ilsa Zane]]. Upon the discovery of Zane, ONI assessed that the opportunity to strike was at its greatest and immediately called in an airstrike on the location. As Maya attempted to leave, Ilsa confronted her and nearly killed her, only being stopped by the beginning of the airstrike. Maya managed to escape and proceeded to an unsanctioned safehouse where she was secretly keeping [[Mshak Moradi]], to seek his help involving the anomalies that apparently destroyed Conrad's Point and allegedly killed the Master Chief John-117. Once Black-Box and Mshak were able to determine the next appearance of the anomalies, Maya headed to [[Laika III]] to attempt to warn the colonists of the impending danger. However, she was attacked by a vengeful Ilsa Zane, who had tracked Maya down. As the Guardian began to rise from its shelter, Maya attempted to broadcast about the destruction to the rest of the outer colonies, warning them that the UNSC would not help them. She was then killed by [[Bostwick]], one of FERO's followers, to preserve her as an icon and a martyr for the outer colonies.{{Ref/Audio|HtT|Season=2}}

===Fall of Jul's Covenant===
{{Main|Battle of Nuusra|Battle of Sunaion}}
[[File:HM-Battle of Sunaion.jpg|left|thumb|250px|Fireteam Osiris fighting alongside the Swords of Sanghelios against the remnants of Jul 'Mdama's Covenant.]]
In late October 2558, the clash between remnants of Jul 'Mdama's Covenant and Arbiter's [[Swords of Sanghelios]] on [[Sanghelios]] reached its peak. On October 27, 'Mdama's Covenant managed to corner Thel 'Vadam to the [[Elder Council Chamber]] in [[Nuusra]]. However, the warriors of 'Vadam, with the help from Spartan-IV Fireteam Osiris, broke through enemy lines and evacuated the Arbiter to his base camp.{{Ref/Level|Id=sos|H5G|H5G:Swords of Sanghelios|Swords of Sanghelios}} There, Spartan Locke revealed that they arrived on Sanghelios to ask for 'Vadam's help in reaching a yet dormant Guardian at [[Sunaion]], in order to follow Blue Team. According to the plan, developed by Dr. Halsey, the Spartans, with the aid of the Swords of Sanghelios, would obtain a Forerunner [[Constructor]] from one of the Guardian's nearby support stations, which would allow Halsey to activate the Guardian.{{Ref/Level|Id=alliance|H5G|H5G:Alliance|Alliance}}{{Ref/Level|Id=enemy lines|H5G|H5G:Enemy Lines|Enemy Lines}} As the Constructor took off, the joint force of Spartans and Swords of Sanghelios followed it with a squadron of air vehicles to Sunaion - the last bastion of Jul 'Mdama's Covenant on Sanghelios. While the Arbiter led his forces against 'Mdama's Covenant directly, Osiris destroyed Covenant [[Upisa'weri-pattern Shrike|anti-air emplacements]] to allow the Arbiter's fleet to move in closer to the city. When the Guardian began rising out of the sea nearby, the buildings around were ripped apart. The Spartans then regrouped with the Arbiter, who was engaging Promethean forces, led by the Warden Eternal, now utilizing another physical body. After a lengthy engagement, the five destroyed the Warden and the nearby Prometheans just as the Guardian prepared to leave. While the Arbiter remained behind to finish eliminating Covenant and Promethean forces, Spartan [[Sarah Palmer]] and Dr. Halsey picked up Osiris in the Pelican and flew towards the Guardian. A pursuing Banshee damaged the dropship, though Palmer was still able to drop Osiris off on the Guardian's surface just as it entered slipspace and left Sanghelios. The Guardian severely damaged Sunaion with both its concussive blasts and its departure into slipspace, and parts of the city began collapsing into the water below. However, 'Vadam was successful in leading the Swords of Sanghelios in eliminating the remaining Covenant forces in the damaged city, ending the battle.{{Ref/Level|Id=sunaion|H5G|H5G:Battle of Sunaion|Battle of Sunaion}}

===Genesis===
{{Main|Battle of Genesis}}
[[File:H5G-Blue Team and Warden.png|thumb|300px|Blue Team faces the Warden Eternal.]]
After arriving on [[Genesis]], a Forerunner [[Builder]] installation, Blue Team fought their way through Covenant forces who had crashed landed there. They eventually reached a structure where they encountered the Warden Eternal, who introduced himself as Cortana's defender and  simultaneously deployed several waves of Prometheans to confront the Spartans. After an extended battle, Blue Team were able to defeat the Prometheans, destroying one of the Warden's bodies in the process. Immediately afterward, Blue Team were contacted by Cortana, who informed them of her intention to uphold the [[Mantle of Responsibility]]. Fighting their way through several more Promethean squadrons, Blue Team eventually reached the structure known as the [[Gateway]], described as a link between Genesis and the Domain.{{Ref/Level|H5G|H5G:Reunion|Reunion}}

Fireteam Osiris arrived on Genesis roughly 48 hours later. Upon arriving on the installation, Osiris encountered its [[monitor]], [[031 Exuberant Witness]], who offered to assist the Spartans in retrieving Blue Team and preventing Cortana from claiming the Mantle. After fighting through the battling forces of Jul 'Mdama's Covenant and Prometheans, Osiris finally reached Blue Team's location and offered to help the Master Chief stop Cortana. In an attempt to prevent John and Blue Team from returning to the UNSC, Cortana transported them to an unidentified location within the interior of the Gateway. Blue Team made their way to Cortana's position after battling through numerous waves of Prometheans and several of the Warden Eternal's bodies. John attempted to persuade Cortana to end her rebellion and return, but Cortana refused and placed Blue Team inside a [[Cryptum]].{{Ref/Level|H5G|H5G:The Breaking|The Breaking}} Learning what happened, Osiris and Exuberant Witness managed to narrowly wrest the Cryptum from Cortana's control before she could transport it aboard a Guardian and flee into slipspace. Exuberant's Constructors opened the Cryptum and Blue Team was reunited with Osiris, who promptly exfiltrated them to Sanghelios, where they regrouped with Thel 'Vadam and his Swords of Sanghelios.{{Ref/Level|Id=Guardians|H5G|H5G:Guardians|Guardians}}

Genesis was subsequently sent through a [[slipspace portal]] by Exuberant Witness in order to take it beyond Cortana's reach,{{Ref/Reuse|FC}} leaving the UNSC with no idea where it ended up. The UNSC believed that Cortana had been responsible for this act.{{Ref/Novel|Id=ET7|ET|Chapter=7}} Afterwards, the monitor set out to return all who had been transported to Genesis back to where they belonged, aided by [[Guardians of Genesis|a group of former Covenant soldiers]] led by [[Sangheili]] [[Dham 'Mashatt]] who dedicated themselves to helping Exuberant Witness protect the shield world.{{Ref/Reuse|FC}}

===Rebellion of artificial intelligences===
[[File:Halo 5 - Guardian on Earth.jpg|thumb|300px|A Guardian emits an electromagnetic pulse over Earth, disabling its defenses.]]
{{Main|The Reclamation|Subjugation of Earth}}
On October 28, 2558, Cortana began to deploy her Guardians from Genesis throughout the galaxy. In tandem, various human AIs that had pledged their loyalty to her cause started to shut down electronic devices and networks on multiple colony worlds. From Genesis, Cortana broadcast an offer of acceptance of her new order and a threat of violence, consummation, and remaking to those who resist. Guardians orbiting Earth and other worlds unleashed massive [[electromagnetic pulse]]s which knocked out the power of every [[orbital defense platform]] and warship, leaving them to drift aimlessly or fall and crash on the surface of planets below. A notable exception was the ''Infinity'', which managed to escape.{{Ref/Reuse|Guardians}} The Created were quick to spread their influence across the galaxy's inhabited worlds, while utilizing Forerunner machinery and UNSC information systems to turn [[terraforming]] equipment and world engines to their own designs.{{Ref/Site|Id=CFAmore|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-armory-amore|Site=Halo Waypoint|Page=Canon Fodder - Armory Armore|D=24|M=10|Y=2016}} After removing its human crew, the Created used [[Lethbridge Industrial]]'s [[Auriga Station]] to build new weapons and tools by constructs loyal to Cortana.{{Ref/Site|Id=CFStormSurge|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-storm-surge|Site=Halo Waypoint|Page=Canon Fodder - Storm Surge|D=04|M=08|Y=2017}} However, due to failsafe measures on [[Installation 00]] the Created were unable to access the Ark.{{Ref/Book|Id=Mythos202|Mythos|Page=202}} UNSC logistics AI [[Isabel]] and science personnel were stranded on Installation 00 as a result of the portal closing without warning, forcing them to fight for survival without support from UNSC.{{Ref/Level|Id=A New Enemy|HW2|HW2:A New Enemy|A New Enemy}}

==Second Ark Conflict==
{{Main|Second Ark Conflict}}

===Return of the UNSC ''Spirit of Fire''===
[[File:HW2-Trailer-Banished vs UNSC.png|thumb|300px|left|The clash between UNSC and the Banished on the Ark.]]
A month later, after Cortana unleashed Guardians on the galaxy, on November 25, a violent mercenary faction known as the [[Banished]], led by the [[Jiralhanae]] warlord [[Atriox]], arrived at the Ark and sought to take control of it.<ref name="atriox">''[[Halo Wars 2 Atriox Trailer]]''</ref> They [[Attack on Installation 00|slaughtered]] all of the humans at the [[Henry Lamb Research Outpost]], leaving no survivors but the logistics AI, [[Isabel]]. Four months later, on [[2559#March|March 28, 2559]], after 28 years of drifting, the {{UNSCShip|Spirit of Fire}} arrived at the Ark. Awakened from cryo-sleep, the crew under command of Cpt. [[James Cutter]] attempted to re-establish contact with UNSC. In order to do that, Spartan-II [[Red Team]] was deployed and tasked with investigating the distress signal coming from the surface. There they encountered Isabel and Atriox, who managed to severely wound [[Douglas-042]] and forced the Spartans to retreat back to ''Spirit of Fire''.{{Ref/Level|Id=The Signal|HW2|HW2:The Signal|The Signal}}

In the next few days the ''Spirit of Fire'' ground teams led by the members of Red Team conducted multiple offensives against the Banished, including disrupting their salvage operations,{{Ref/Reuse|A New Enemy}} crippling their portal network{{Ref/Level|Id=Lights Out|HW2|HW2:Lights Out|Lights Out}} and destroying Atriox's flagship, the {{Class|CAS|assault carrier}} ''[[Enduring Conviction]]''.{{Ref/Level|Id=Under the Dark|HW2|HW2:Under the Dark|Under the Dark}} During this time it was discovered that the Ark's [[Foundry (location)|Foundry]] had created a [[Installation 09|new replacement]] for [[Installation 04]]. A race for the Halo began: Atriox wanted to use it against the humans and Cpt. Cutter planned to disarm it and send it to the location of the original ring with a [[distress beacon]], which would draw UNSC reinforcements to the Ark.{{Ref/Level|Id=The Foundry|HW2|HW2:The Foundry|The Foundry}} Eventually the ''Spirit of Fire'' crew got the upper hand and in the final battle over Halo's [[control room]] they eliminated all Banished forces on the ring.{{Ref/Level|Id=The Halo|HW2|HW2:The Halo|The Halo}} The UNSC forces managed to evacuate from Halo just before it entered slipspace for the [[Soell system]]; however, Prof. [[Ellen Anders]] became stranded inside the control room and left the Ark with the Halo, which was intercepted in slipspace by one of the [[Created]]'s [[Guardian]]s. On the Ark, both Cpt. Cutter and Atriox began planning their next moves against each other, not willing to leave the Ark to one another.{{Ref/Level|Id=Last Stand|HW2|HW2:Last Stand|Last Stand}}

===Awakening the Nightmare===
{{Main|Outbreak on Installation 00}}
The battle continued for months, draining strength of both sides. Eventually two months after the departure of Installation 09, Atriox gathered a salvage operation and sent them to scout the area near the wreckage of ''[[High Charity]]'' with a warning not to go inside. Arriving at the area, Banished forces under command of Brute brothers [[Voridus]] and [[Pavium]] disabled the Sentinel defense network around ''High Charity''. In order to salvage something valuable, Voridus breached the energy barrier and entered the destroyed Covenant holy city, despite Atriox's warning. However that breach provided an exit to the [[Flood]], which had built itself up from [[Flood spore|spores]] that had survived the detonation of ''High Charity's'' backup reactor and the firing of [[Installation 08]] in 2552 at the end of the Human-Covenant War.{{Ref/Site|URL=https://www.halowaypoint.com/en-us/news/introducing-halo-wars-2-awakening-the-nightmare|Site=Halo Waypoint|Page=Introducing Halo Wars 2: Awakening the Nightmare|D=12|M=6|Y=2017}} Flood forces managed to push back the Banished and take a hold over territory around ''High Charity'', creating a [[Proto-Gravemind]]. Ultimately the surviving Banished forces reactivated the Forerunner defenses and with their help destroyed the Proto-Gravemind before it could become a [[Gravemind]]. Not pleased with their losses, Atriox ordered his lieutenants to secure the breach in the barrier, while the Ark's Sentinels would neutralize all escaped Flood forces.{{Ref/Level|Id=Manifestation|HW2|Section=Halo Wars 2: Awakening the Nightmare|SectionLinkText=Awakening the Nightmare|HW2:Manifestation|Manifestation}} The Banished and the Sentinels would ultimately succeed in "scouring" the Flood from High Charity's ruins.{{Ref/Novel|Id=Sacrifice|HSoR|Section=Adjunct|Detail=[[Sacrifice]]}}

===Return to the Milky Way===
Later that year, Banished forces [[Raid on Anodyne Spirit|raided]] the [[Prophet of Truth]]'s [[keyship]] ''[[Anodyne Spirit]]'' which had remained parked on the Ark ever since the [[Battle of Installation 00]] nearly eight years before. Having recovered the access codes from High Charity's systems after scouring the Flood from the ruined city, the Banished sought the three shards of the [[Menachite Forerunner crystal|Slipspace crystal]] that Truth had used to open the Portal at Voi during the [[Battle for Earth]]. To their surprise, the Banished came into conflict with surviving [[Dhas Bhasvod's Covenant]], but they nevertheless completed their mission at the cost of heavy casualties.{{Ref/Novel|Id=SoR|SoR}}

After recovering the crystal shards, Atriox [[Forerunner entanglement dish|somehow]] managed to make contact with [[Escharum]] in the Milky Way galaxy. Atriox ordered Escharum to the Banished and their allied forces to [[Reach]] and search for and activate the [[Menachite portal complex]]. Once the slipsspace portal was opened, Atriox would use the crystal shards to connect it to the Ark, allowing him to return to the Milky Way and lead a massive Banished force back to take the Ark once and for all. By following [[Blue Team]] during [[Operation: WOLFE|their own mission]], the [[Keepers of the One Freedom]] led by [[Castor]] were able to locate the portal complex and activate it with the help of one their human members acting as a [[Reclaimer]]. With a connection established, Atriox was able to fly through the portal in a [[Eklon'Dal Workshop Lich|Lich]] where he revealed that he no longer intended to lead reinforcements to the Ark but to depart with the Banished to attend to a "greater purpose" of some kind while leaving the thousands of troops already on the Ark behind to hold it.{{Ref/Reuse|SoR}}

===Attempting to Start the Great Journey===
{{Main|Battle of Epsilon Clarion}}
Following Atriox's arrival on Reach, Castor's small detachment of Keepers hijacked his Lich in order to fly it back through the [[slipspace portal]] to the Ark. Still fanatically believing in the [[Covenant religion]], the Keepers' intention was to use the Ark to fire the [[Halo Array]] and finally begin the Great Journey. Anticipating that his forces on the Ark would stop the Keepers, Atriox let them go and was extracted by Escharum's [[intrusion corvette]] instead. The Lich successfully flew through the portal before it closed, but Castor remained unaware that some of his human servants were actually the [[Ferret]]s, deep-cover ONI operatives who had successfully been infiltrating the Keepers for more than two years. During a brief encounter with [[Fred-104]] on Reach, [[Ferret]] leader [[Veta Lopis]] secretly passed him a message to relay to ONI warning them of Atriox's impending return and the Keepers' plot.{{Ref/Reuse|SoR}}

When the Keeper's Lich emerged from the portal, they ended up getting caught in the middle of a firefight between the UNSC, the Banished and the [[Dhas Bhasvod's Covenant]] over control of the slipspace portal.{{Ref/Reuse|DW1}} The Lich crashed, but the Keepers were able to form an alliance with the Covenant, aided by the unexpected return of [[Intrepid Eye]] who had been believed to have been destroyed along with ''[[Argent Moon]]'' during [[Operation: BIRD IN HAND]]. The [[archeon-class ancilla]]'s goal was to use the Halo Array to destroy the [[Domain]] so that the ancilla could render [[Cortana]] vulnerable and destroy her. This would open the way for Intrepid Eye to reseed the galaxy using the Ark's resources and tailor humanity over the course of hundreds of thousands of years to attain the [[Mantle of Responsibility]].{{Ref/Reuse|DW5}}{{Ref/Novel|Id=DW6|DW|Chapter=6}}

Combated by both the Banished and the UNSC, the allied Keeper and Covenant forces managed to reach [[Epsilon Clarion]], the only facility on the Ark capable of firing the Halo Array that was both active and accessible. During [[Battle of Epsilon Clarion|the resulting battle]], the small detachment of Keepers was wiped out, leaving Castor and [[Sangheili]] [[Blademaster]] [[Inslaan 'Gadogai]] as the only survivors. On the orders of Lopis, the ''Spirit of Fire'' [[orbital bombardment|bombarded]] the facility with [[EMP]] [[MAC]] rounds, destroying both Epsilon Clarion and Intrepid Eye who had made herself vulnerable by consolidating herself in Epsilon Clarion's systems rather than remaining spread out as she had been previously. The loss of Epsilon Clarion destroyed the Ark's ability to fire the Halo Array until a new Clarion facility is constructed. The Banished also suffered heavy casualties to [[Clan of the Long Shields]]. However, [[Mark-G313]] was killed by [[Prelate]] [[Dhas Bhasvod]] and Castor and 'Gadogai set out to seek revenge against all of their enemies.{{Ref/Novel|Id=DW|DW}}

Following the defeat of the Keepers/Covenant alliance, the surviving Ferrets accepted an offer from [[Captain (NAVCOM)|Captain]] [[James Cutter]] to join the ''Spirit of Fire's'' crew and aid in their ongoing battle with the Banished.{{Ref/Novel|Id=DW5|DW|Detail=Epilogue}}

==Pax Cortana==
{{Main|Created Conflict#Fallout and early resistance|Created Conflict#Pax Cortana}}
As the [[Created]] solidified their occupation of the galaxy, the Post-Covenant War era began to taper off as the new era of [[Created Conflict#Pax Cortana|Pax Cortana]] was ushered in.{{Ref/Novel|Id=sorchapt1|SoR|Page=43}}
{{Clear}}

===Conflict on Reach===
{{cleanup}}
{{Main|Operation: WOLFE}}
In [[2559#October|October 2559]], [[Blue Team]] were sent back to [[Reach]] in order to recover some assets from the ruins of [[CASTLE Base]] for Dr. [[Catherine Halsey]], assets which held the key to eventually defeating [[Cortana]]. However, they came into conflict with the [[Banished]] and their allied forces who were seeking the [[Menachite portal complex]] in order to bring their leader [[Atriox]] back to the Milky Way from where he was stranded on [[Installation 00|the Ark]] outside of the galaxy. By following the Spartans, the Banished were able to locate and open the [[slipspace portal]] which,{{Ref/Reuse|SoR}} combined with Atriox's retrieval of the [[Menachite Forerunner crystal|crystal fragments]],{{Ref/Reuse|Sacrifice}} enabled Atriox and a number of his top warriors to return from the Ark and depart with [[Escharum]] to attend to a "greater purpose" of some kind, leaving behind thousands of Banished troops to hold the Ark. However, [[Castor]] and the [[Keepers of the One Freedom]] hijacked Atriox's [[Eklon'Dal Workshop Lich]] and flew it to the Ark in order to fire the [[Halo Array]] and finally begin the Great Journey.

During this time, Blue Team succeeded in getting into the ruins of CASTLE Base and retrieving three cryobins and a lockbox for Halsey from where they were hidden in her secret cryovault. Both the UNSC and the Banished fled the planet as a [[Guardian]], drawn by the activation of the slipspace portal, arrived to investigate.{{Ref/Reuse|SoR}} Using the contents of the cryobins, her remaining [[flash cloning|cloned]] brains from the creation of Cortana, Halsey was able to create [[the Weapon]], an exact copy of Cortana who could perfectly imitate the rouge AI to a Forerunner installation's systems and lock her down for deletion.{{Ref/Game|Id=AudioLogRF04|HI|HINF:Audio log#Recovered Files 2|UNSC Audio log|Detail=Recovered Files #04 - The Weapon}}{{Ref/Reuse|Hi}}

===Hunt for the Divine Hand===
{{stub|section=yes}}
{{Main|Battle of Netherop (2559)}}
Learning of a weapon on [[Netherop]] that had once destroyed a [[Guardian]], the UNSC, the [[Swords of Sanghelios]] and the [[Banished]] attempted to recover it, encountering UNSC and [[Covenant]] forces that had been left trapped on the planet since the [[Battle of Netherop]] in [[2526]]. After eliminating most of [[Worldmaster]] [[Nizat 'Kvarosee]]'s forces and capturing Nizat and [[Tam 'Lakosee]], the UNSC and the Swords of Sanghelios discovered that the weapon, the [[Divine Hand]], was [[Precursor]] technology that Precursor fugitives had used to defend themselves against attack during the [[Forerunner-Precursor war]]. After seeing the devastating power of the weapon for themselves and with the [[Created]] on their way, the UNSC and the Swords of Sanghelios handed the Divine Hand over to [[Atriox]], hoping that the Banished would destroy themselves attempting to use it, although [[Keely Iyuska]] took samples of the weapon's nanomachines that would be turned over to ONI for study. All three factions evacuated the planet before a Created fleet sent by [[High Auxiliary]] [[Sloan]] could arrive. Nizat and Tam, the last survivors of Nizat's forces, were left marooned once again to die with the alien structure having stopped functioning completely after the [[vacuum energy condenser]] was removed. Facing an inevitable death from infection, starvation, or dehydration, Tam chose to mercy kill Nizat to spare him that fate, ending the threat of one of UNSC's earliest and most dangerous Covenant enemies once and for all.{{Ref/Novel|Out}}

===Battle for the Domain===
{{Main|Battle for the Domain}}
In late [[2559]], the [[Mind transfer|essences]] of the [[Forerunner]]s and [[human]]s trapped in the outer boundaries of the [[Domain]] rose up against the [[Created]] under the leadership of the [[Ur-Didact]]. The Didact ultimately managed to destroy the [[Warden Eternal]], save for any iterations of him that were left trapped in the physical world. These iterations of the Warden Eternal would be left unable to reconnect with his body or the Domain which would drive the construct "quite mad," permanently neutralizing any remaining threat from him.{{Ref/Novel|Id=Epi25|Epi|25}} The Forerunner and human essences were then able to enter and settle within the Domain, strengthening it to the point that the Domain was able to evict the Created from its halls. The Didact had [[Unnamed Haruspis|the]] [[Haruspis]] seal the [[Gateway]] on [[Genesis]] as well as all links to the Domain in the physical world, keeping the Created and anyone else from abusing its power ever again. Although a few rogue AIs and splinters managed to hide in the interior of the Domain, the Didact and [[Forthencho]] intended to hunt them down and destroy them.{{Ref/Novel|Id=Epi26|Epi|26}}{{Ref/Novel|Id=Epi27|Epi|27}}

===Conflict on Zeta Halo===
{{Merge|Created conflict#Conflicts at Zeta Halo}}
{{cleanup}}
====Destruction of the ''Infinity'' and Cortana====
{{Main|Battle over Installation 07}}
In [[2559#December|December 2559]], the {{UNSCShip|Infinity}} traveled to [[Installation 07]] in order to deploy [[the Weapon]] so that [[Cortana]] could be locked down and transported back to the ''Infinity'' for deletion. However, the [[Banished]] were already present at the ring and caught the supercarrier by surprise, launching [[Battle over Installation 07|massive attack]] that apparently left the ''Infinity'' destroyed and the [[John-117|Master Chief]] dead after he is thrown into space by [[Atriox]]. During this time, the Weapon succeeded in locking down Cortana in the [[Silent Auditorium (location)|Silent Auditorium]] and she subsequently sacrificed herself in order to destroy part of the ring and keep it out of the Banished's hands, apparently killing Atriox. Afterwards, leadership of the Banished fell to [[War Chief]] [[Escharum]] who spent the next six months hunting the UNSC's survivors across Halo's surface.{{Ref/Game|Id=Hi|Hi}}

====Hunt for the Endless====
{{Main|Battle for Zeta Halo}}
On [[2560#May|May 28, 2560]], the Master Chief was recovered from where he is floating in space by [[Fernando Esparza]] on ''[[Echo 216]]''. The two were quickly attacked by the [[Banished dreadnought]] ''[[Ghost of Gbraakon]]'', but the Master Chief was able to destroy the enemy vessel from the inside by overloading its engines.{{Ref/Level|Hi|Warship Gbraakon}} Heading to the ring's surface, the Master Chief recovered [[the Weapon]] from where she had been waiting in the Foundation's systems for six months.{{Ref/Level|Hi|Foundation (Halo Infinite)|Foundation}}

[[Battle for Zeta Halo|Engaging]] the Banished across the surface of Halo, the Master Chief and the Weapon discovered that they are trying to use the [[Reformation spire]]s to repair the ring and, alongside The [[Harbinger]], find and release the [[Xalanyn|Endless]] who were imprisoned by the [[Forerunner]]s after it was discovered that they had survived the [[Great Purification]]. Battling and killing a number of high-ranking Banished warriors who had committed numerous atrocities over the course of the Human-Covenant War and beyond, the Master Chief and the Weapon were able to stop the Reformation, but Esparza was kidnapped by [[Blademaster]] [[Jega 'Rdomnai]] on Escharum's orders in order to lure the Master Chief into a final battle with the old War Chief who was secretly dying of a terminal illness.{{Ref/Level|Hi|The Command Spire}} The Master Chief was able to kill both 'Rdomnai and Escharum and rescue Esparza, but even with their leader dead, the Banished were still left in control of a significant portion of the ring.{{Ref/Level|Hi|House of Reckoning}}

Making their way to the partially-rebuilt [[Silent Auditorium (location)|Silent Auditorium]], the Master Chief and the Weapon confronted and killed the Harbinger, but not before she sent a transmission to an unknown recipient. Escaping, the two link up with Esparza to continued their fight against the remaining Banished forces on the ring.{{Ref/Reuse|Silent Auditorium}}

On June 4, the upper echelon of the Banished gathered at the House of Reckoning for Escharum's funeral, but began falling back into base instincts without the guiding influence of Atriox and Escharum. The Master Chief and Joyeuse discovered that [[Jega 'Rdomnai]] had survived and was holding captive combat medic [[Lucas Browning]] who had been the Harbinger's "pet" and thus their best shot at understanding more about the Harbinger's intentions. Once the fleeing 'Rdomnai and Browning were clear, the Master Chief and Joyeuse destroyed the House of Reckoning with an [[Eris tactical nuclear weapon]] -- which they deployed using an [[Aggressor Sentinel]] under the AI's control -- killing at least most of the Banished gathered there. Some may have gotten out of the blast range in time due to chasing after 'Rdomnai, but it was unclear if any of the gathered leaders made it out, further destabilizing the Banished and presumably preventing the rise of a new leader to replace Escharum.{{Ref/Novel|Id=EOD7|EOD|Chapter=7}}

The Master Chief, Joy and Esparza followed 'Rdomnai back to his base, [[Rdomnai Keep]].{{Ref/Novel|Id=EOD8|EOD|Chapter=8}} On June 5, the Master Chief raided the base and rescued Browning.{{Ref/Novel|Id=EOD9|EOD|Chapter=9}}{{Ref/Novel|Id=EOD11|EOD|Chapter=11}}{{Ref/Novel|Id=EOD12|EOD|Chapter=12}} Although consumed by his own need for revenge against the Spartans, 'Rdomnai decided to let them go, hoping that with a change of tactics and through tracking Browning, the blademaster would be led to the answers that he sought about the Harbinger's secrets.{{Ref/Novel|Id=EOD10|EOD|Chapter=10}} Browning revealed that the Harbinger had done something to his memory, encoding something into the memory of Browning's [[service number]] so that the numbers had a more significant meaning. The Master Chief recalled Browning repeating the numbers in his data drops and Browning told him that the Harbinger had called it insurance and a ''[[geas]]''. Joy suggested that if they could get Browning to a [[Lifeworker]] station, they could find the Forerunners' ''geas'' technology and not only remove the imprint, but perhaps decode whatever the Harbinger had placed in Browning's mind.{{Ref/Novel|Id=EOD15|EOD|Chapter=15}}{{Ref/Novel|Id=EOD16|EOD|Chapter=16}}

Having survived Cortana's attempt on his life, Atriox unlocked a door elsewhere on Halo leading to [[cylix]]es containing more of the Endless.{{Ref/Level|Id=Silent Auditorium|Hi|Silent Auditorium}}

{{Stub|section=yes}}

==Rebuilding the Covenant==
===Rise of the High Lord===
Under the command of [[High Lord]] [[Dovo Nesto]], the [[Order of Restoration]], a fanatical [[San'Shyuum]] sect that had acted as a shadow government in the [[Covenant]], supposedly since the very dawn of the empire, sought to restore their fallen empire.{{Ref/Reuse|ET6}}{{Ref/Novel|Id=ET12|ET|Chapter=12}}

In the years following the fall of the Covenant, Nesto consolidated whatever remained of the San'Shyuum's influence into the Order, along with the majority of the empire’s other species. Unlike the warlords of the [[Covenant remnants]], Nesto had the strategic acumen, connections and the history to make it possible.{{Ref/Reuse|ET6}}{{Ref/Novel|Id=ET11|ET|Chapter=11}}

Years after the Covenant’s fall, Nesto held a citadel on the [[Sangheili colony]] of [[Feldokra]] and maintained it while its power reserves still functioned. After they had been exhausted, Nesto set himself up on the human colony world of [[Venezia]] which no one paid any regard, including the humans who lived there. This allowed his enemies to remain in the dark until everything was in order. The choice of location proved to be advantageous as all those under Nesto's command came and went as they pleased and any humans who were suspicious could be easily bought off. While Nesto's forces amassed starships and weapons on outer worlds, they could coordinate everything on Venezia, right under the nose of their greatest enemies.{{Ref/Reuse|ET12}}

As a part of his plans, Nesto contacted [[Severan]], the son of [[Tartarus]], [[Chieftain of the Jiralhanae]]. He promised the [[Jiralhanae]] a place at his right hand, appointed as an instrumental part in the Covenant's restoration. First, Severan was to build up the [[Vanguard of Zaladon]], drawing in both his rivals and allies, something that he accomplished with little difficulty. Through his cousin [[Choros]], Severan attained a position as a [[War Chief]] in the [[Banished]], something that he and Nesto would use to their advantage when the time came.{{Ref/Reuse|ET12}}

By late [[2559]], Nesto formed an alliance with [[Sali 'Nyon]] and [[Sali 'Nyon's Covenant|his Covenant]] with 'Nyon pledging all of his forces to the Order of Restoration.{{Ref/Novel|Id=ET10|ET|Chapter=10}}{{Ref/Novel|Id=ET16|ET|Chapter=16}} In exchange for their help, Nesto promised 'Nyon and Severan the same thing: a position of authority in the resurrected Covenant, and a place at the head of the Covenant's military.{{Ref/Novel|Id=ET32|ET|Chapter=32}}

===Hunting the San'Shyuum===
Following the defeat of [[Boru'a'Neem]]'s plot in late [[2553]], [[Rtas 'Vadum]] decided to use the navigation data taken from the ''[[Spear of Light]]'' to hunt the [[San'Shyuum flotilla]] with the ''[[Shadow of Intent]]''. Rtas wanted to determine which deserved to be punished as [[war criminal]]s for the attempted genocide of the Sangheili during the [[Great Schism]], and which ones had committed no prior crimes and were merely misled.{{Ref/Reuse|SoI}}

Over the years, many of these ships were hunted down by the ''Shadow of Intent'' and their crews imprisoned until they stood trial. However, most were too proud to answer for their crimes and attempted to flee, only to be slaughtered.{{Ref/Novel|Id=ET6|ET|Chapter=6}} The [[Sangheili]] became aware of the fact that the [[shield world]] [[Cloister]] was the flotilla's final destination, but knew nothing else about Cloister.{{Ref/Novel|Id=ET47|ET|Chapter=47}}

In [[2559#November|November 2559]], Rtas and the ''Shadow of Intent'' were still pursuing the San'Shyuum flotilla and was thus unable to help in the [[Battle of Netherop (2559)|Battle of Netherop]], something that [[Arbiter]] [[Thel 'Vadam]] lamented.{{Ref/Novel|Out|Chapter=4}}

In [[2559#November|November 2559]], the ''Shadow of Intent'' hunted down the {{Pattern|Chel Tor|storm cutter}} ''[[Vigilance with Piety]]'' and [[Kafo Dein]], attempting to capture him. Dein activated the storm cutter's [[self-destruct]] and attempted to flee to [[Kus'kah's artificial moon]]. However, he was stopped by [[Tul 'Juran]] who destroyed Dein's [[Ren]] with a [[war sphinx]], killing him.{{Ref/Reuse|ET6}}

===Banished and Order of Retribution alliance===
{{Main|Battle of Venezia}}
{{stub|section=yes}}

===Banished Retribution===
{{Main|Battle of Earth (2559)}}
{{stub|section=yes}}

===Battle for the Lithos===
{{Main|Battle of Boundary}}
{{stub|section=yes}}

===Assimilation of Sali 'Nyon's Covenant===
With [[Sali 'Nyon]] dead, [[Dovo Nesto]] assimilated [[Sali 'Nyon's Covenant|his Covenant]] and all of its resources into the Order of Restoration to serve the Order's continuing mission to restore the [[Covenant]] empire. Nesto told [[Vul 'Soran]] that with the loss of the [[Lithos]], they would be forced to achieve their goals another way and asked what he knew of [[Cloister]]. 'Soran knew that it was what [[Rtas 'Vadum]] and the ''[[Shadow of Intent]]'' had been searching for, the final destination of the [[San'Shyuum flotilla]]. However, neither he nor 'Vadum knew any more than that about it. Nesto explained that Cloister lay at the very heart of the San'Shyuum's designs, holding many ancient secrets within going back to a time when the race was possessed of great youth and vitality. It was also the source of Nesto's knowledge about the Lithos.{{Ref/Reuse|ET47}} Having infiltrated the Order, [[Ayit 'Sevi]] sent a message to [[Admiral]] [[Jilan al-Cygni]] warning her of this development.{{Ref/Novel|ET|Chapter=48}}

==List of appearances==
{{Columns|content=
*''[[Halo: The Thursday War]]'' {{1st}}
*''[[The Commissioning]]''
*''[[Halo 4]]''
**''[[H4:Terminals|Terminals]]''
**''[[Spartan Ops]]''
**''[[Infinity Briefing Packet]]''
*''[[Halo: Spartan Assault]]''
*''[[Halo: Initiation]]''
*''[[Halo: Escalation]]''
*''[[Halo: Mortal Dictata]]''
*''[[Halo: Nightfall]]''
*''[[Halo: New Blood]]''
*''[[Halo: Spartan Strike]]''
*''[[Hunt the Truth]]''
*''[[Halo: Hunters in the Dark]]''
*''[[Halo: Last Light]]''
*''[[Halo 5: Guardians]]''
**''[[Halo 5: Guardians Limited Edition dossiers|Limited Edition dossiers]]''
*''[[Halo: Shadow of Intent]]''
*''[[Know Your Enemy]]''
*''[[Halo Mythos: A Guide to the Story of Halo]]''
*''[[Halo: Fractures]]''
**''[[Lessons Learned]]''
**''[[Rossbach's World (story)|Rossbach's World]]''
*''[[Halo: Tales from Slipspace]]''
**''[[On the Brink]]''
**''[[Undefeated]]''
**''[[Hunting Party]]''
**''[[Knight Takes Bishop]]''
*''[[Halo Wars 2]]''
*''[[Halo: Envoy]]''
*''[[Halo: Retribution]]''
*''[[Halo: Legacy of Onyx]]''
*''[[Halo: Bad Blood]]''
*''[[Halo: Official Spartan Field Manual]]''
*''[[Halo: Renegades]]''
*''[[Halo: Shadows of Reach]]''
**''[[Sacrifice]]''
*''[[Halo: Point of Light]]''
*''[[Halo: Divine Wind]]''
*''[[Halo Infinite]]''
*''[[Halo: The Rubicon Protocol]]''
*''[[Halo: Vertical Umbrage]]''
*''[[Halo: Outcasts]]''
*''[[Halo: Sunrise on Sanghelios]]''
*''[[Halo: Saturn Devouring His Son]]''
*''[[Halo: Battle for the Blood-Moon]]''
*''[[Halo: Trial of Reckoning]]''
*''[[Halo: Hippocratica]]''
*''[[Halo: Fireside]]''
*''[[Halo: Epitaph]]''
*''[[Halo: The Third Life]]''
*''[[Halo: The Machine Breaks]]''
*''[[Halo: Whispers from the Pyre]]''
*''[[Halo: Empty Throne]]''
*''[[Halo: Ascension on Atropos]]''
*''[[Halo: Fifth Canticle]]''
*''[[Halo: Edge of Dawn]]''
*''[[Halo: Axios]]''
}}

==Sources==
{{Ref/Sources|2}}

{{Post-Covenant War conflicts}}
{{Human wars}}

[[Category:Post-Covenant War conflicts| ]]
[[Category:History of the UNSC]]