Editing Great Schism

*Ongoing conflict between the [[Sangheili]] and the [[Jiralhanae]]

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|commanders1=

[[Prophet of Truth|High Prophet of Truth]]† <br>

**[[Truth's fleet|Prophet of Truth's fleet]]

**Jiralhanae-led [[High Charity defense fleet]]

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*[[Fleet of Retribution]]

*[[Fleet of Righteous Vigilance]]

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*Most San'Shyuum {{C|reduced to an [[Extinction#Near-extinctions (Endangered species)|endangered species]]}}

**[[Prophet of Mercy|High Prophet of Mercy]]

**[[Prophet of Truth|High Prophet of Truth]]

*Some Unggoy

*Few Mgalekgolo

*Some Unggoy

*Some Mgalekgolo}}

The conflict went down in Sangheili history as the '''Great Betrayal''',<ref>'''Halo: Evolutions''', ''The Return'', ''page 247''</ref> its deep wounds continuing to stir animosity between their kind and the Jiralhanae for years to come.{{Ref/Reuse|The Return}}

{{Quote|no=two|1=Thel 'Vadamee|q1=We are strong, Kig-Yar. That is why we sit at the right hand of the Prophets.|2=Reth|q2=One day that shall pass.|3=Conversation between [[Reth]] and [[Thel 'Vadam]]ee in [[2535]]<ref>'''[[Halo: The Cole Protocol]]''', ''page 229''</ref>}}

[[File:H2A Terminals - Sangheili surrender.png|250px|thumb|left|The Sangheili threatened San'Shyuum power,{{Ref/Reuse|challenger}} while the Jiralhanae threatened Sangheili power.{{Ref/Reuse|Conversations}}]]

For centuries over the course of the [[history of the Covenant]], various high ranking [[Sangheili]] with great influence would use their power to ask questions, eventually coming close to discovering the truth about the [[Forerunner]]s.{{Ref/Reuse|challenger}} Discovering such a truth would falsify the [[Covenant religion]] and shatter the empire along with its power structure. As such, the [[San'Shyuum]] [[High Prophet]]s perceived these influential Sangheili as a threat to their authority, and would send them on suicidal missions decorated under the honorary guise of [[Arbiter]]s to discretely remove their threatening presence.{{Ref/Game|Id=challenger|Halo 2: Anniversary|Part=[[Terminal (Halo 2: Anniversary)|Terminal 11]]|Quote=In some cases, that influence was already being used to question the decisions of your Hierarchs. In fact, that very questioning often gave rise to the charges of heresy that so neatly removed the challenger from the Hierarchs' concern.}}

The High Prophet of Truth plotted to eventually replace the Sangheili with the [[Jiralhanae]], as he saw the latter as more willing and unquestioning pawns. Ever since the Jiralhanae's integration in [[2492]], their dominating physicality and aggressive behavior was perceived as a threat by the Sangheili to their superior status in the Covenant hierarchy.<ref name="Conversations">[[Conversations from the Universe]]: [[Conversations from the Universe#Grunt Conversation|Grunt Conversation]] "And you have ears, you've heard the disrespect the Jiralhanae show the Sangheili. They hate each other. The Sangheili have lived too long under the shelter of the Covenant as the strongest of us. The Jiralhanae come stomping along and suddenly it's not so simple as it was."</ref> In turn, the Sangheili treated the Jiralhanae poorly and oppressed them, to keep them in line.<ref>[http://www.gamespot.com/articles/halo-wars-2-new-character-images-and-details-revea/1100-6442098/?ftag=GSS-05-10aaa0b '''Gamestop''': ''Halo Wars 2: New Character Images and Details Revealed''] - "Decimus still harbors some resentment against the Elites under Atriox's banner due to how Elites treated the Brutes during the time of the Covenant"</ref> Competition for dominance in the Covenant military and hatred festered between the two species,{{Ref/Reuse|Conversations}} though the Sangheili maintained their authority and power as a founding race.<ref>[[Bestiarum]] "The Sangheili are, simply put, technological and societal equals of the Prophets yet, for a significant period, found themselves as the dominant military muscle for the entire Covenant structure"</ref> Feeding off of their societal rivalry, Truth knew that the Jiralhanae would be more than happy to replace the Sangheili as the Covenant's military leaders. He had appointed [[Tartarus]], a loyal Jiralhanae, to the position of [[Chieftain of the Jiralhanae]] who would help him execute his plan. Truth kept these schemes to himself and waited until the time was right to implement them.

===Secret preparations===

===The Changing of the Guard===

{{Main|Changing of the Guard}}

[[File:H2A Beamish cameo.jpg|thumb|250px|Kig-Yar and Unggoy protest on High Charity.]]

The High Prophet of Truth further demoted the Sangheili by giving command of their fleets to the Jiralhanae, including the [[Fleet of Profound Solitude]], [[Fleet of Tranquil Composure]] and [[Fleet of Inner Knowledge]].{{Ref/Reuse|HWTimeline}} Many Sangheili [[Shipmaster]]s and [[Fleetmaster]]s would be replaced with new Jiralhanae commanders. Truth allocated more loyal forces to his disposal by pardoning and releasing all Jiralhanae prisoners, while publicly framing it as a celebration for the species newly elevated status in Covenant society.<ref name="HWTimeline">'''[[Halo Wars]]''', ''[[Halo Wars Timeline Events|Timeline]]''</ref>  

The Sangheili found these changes to be deeply humiliating, as founding members of the Covenant they were insulted to see their societal status quickly becoming relegated below the Jiralhanae.<ref>[http://www.gamespot.com/articles/halo-wars-2-new-character-images-and-details-revea/1100-6442098/?ftag=GSS-05-10aaa0b '''Gamestop''': ''Halo Wars 2: New Character Images and Details Revealed''] - "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>

===Conflict erupts===

{{Quote|The Great Schism is upon us. The unbreakable Covenant [[Writ of Union]] has been split asunder. This is the end of the Ninth, and final, [[Ages of Reclamation|Age]].|Xytan 'Jar Wattinree{{Ref/Reuse|GoO}}}}

[[File:H2A Terminals - Murder of the Councilors.jpg|thumb|300px|left|The massacre of the Sangheili High Councilors.]]

The civil war was at first a conflict over orthodoxy and leadership, as [[Imperial Admiral]] [[Xytan 'Jar Wattinree]] summoned many Sangheili to [[Joyous Exultation]] in a plot to wipe out the Jiralhanae. However, a revelation among the Sangheili occurred when Thel 'Vadam's [[Fleet of Retribution|contingent]] discovered the truth that the Halos would kill all life in the galaxy and that the Great Journey was a lie, from both the [[Gravemind]] and [[343 Guilty Spark]]. Their disillusionment changed their goal from reforming the purity of the Covenant to actively standing against the [[Covenant religion]] the following day. Wattinree's separatist forces would be destroyed in the meantime in the accidental [[NOVA bomb]]ing of Joyous Exultation and the [[Onyx Conflict]].

===Sangheili-human alliance===

[[File:HLC The Great Schism.jpg|250px|thumb|left|One of the Sangheili leaders, [[Arbiter]] [[Thel 'Vadam]], duels against the Jiralhanae leader [[Tartarus]].]]

The Sangheili [[Fleet of Retribution]], led by [[Shipmaster]] [[Rtas 'Vadum]], arrived at Earth in pursuit of the Flood infested cruiser. Several Sangheili were deployed to assist the UNSC forces in containing the Flood in Voi from spreading across the entire planet. After the allied forces were airborne, the Fleet of Retribution glassed the city and its environs under the order of Shipmaster 'Vadum, Arbiter Thel 'Vadam had persuaded him that only glassing the local area was necessary opposed the the whole planet. This led to a debate between Shipmaster 'Vadum and [[Fleet Admiral]] [[Lord Terrence Hood]]. The Sangheili and Commander Miranda Keyes' forces agreed to follow Truth to the Ark beyond the portal.<ref name="floodgate">'''Halo 3''', campaign level ''[[Floodgate]]''</ref>{{clear}}

The joint Sangheili-UNSC fleet arrived at the Halo Array's control center, [[Ark]] [[Installation 00]], on December 11 where they engaged [[Truth's fleet]]. During the [[Battle of Installation 00|ensuing conflict]], the Fleet of Retribution completely destroyed their Jiralhanae counterpart in the space battle, despite the latter's three-to-one numerical superiority.<ref name="ark">'''Halo 3''', campaign level ''[[The Ark (level)|The Ark]]''</ref>  

With the war over, Shipmaster 'Vadum evacuated the remaining Sangheili and human forces aboard his flagship, the ''[[Shadow of Intent]]'', and left Master Chief John-117 and the Arbiter behind to deal with the Flood at their request. Any remaining Covenant forces were presumed to be killed when Halo [[Installation 08]] was activated and the Ark was severely damaged by the debris; though a few remnants held out in the ''[[Anodyne Spirit]]'' and had miraculously managed survived even years after the war.{{Ref/Book|[[Sacrifice]]}} The firing of the incomplete ring had also ended the threat of the Flood. The Master Chief, the Arbiter, and the AI [[Cortana]] had escaped on the frigate {{UNSCShip|Forward Unto Dawn}}, which was split in half when their escape portal closed too early.<ref name="h3 halo">'''Halo 3''', campaign level ''[[Halo (Halo 3 level)|Halo]]''</ref>

==Aftermath==

[[File:Escalation schism.png|thumb|200px|left|An Elite fights against a Brute raiding his settlement.]]

{{Main|Sangheili-Jiralhanae war}}

*The Arbiter and Tartarus are sent to retrieve Installation 05's [[activation index]]. The Arbiter successfully takes the index, but Tartarus tries to kill him and takes the index from him, having been secretly ordered to do so by the Prophet of Truth.<ref>'''Halo 2''', campaign level ''[[Quarantine Zone]]''</ref>

*Most of the Sangheili Councilors are taken to the surface of Installation 05 where they are murdered by the [[Jiralhanae]].{{Ref/Reuse|uprising}}

*The [[Flood]] invade High Charity during the battle, entering the city's dome via precision [[Slipstream space|slipspace]] jump aboard {{UNSCShip|In Amber Clad}} and its embarked [[D77-TC Pelican|Pelicans]]. The [[Prophet of Mercy|High Prophet of Mercy]] is attacked by a [[Pod infector]] and abandoned by the Prophet of Truth, who now reigns as the Covenant's sole leader.{{Ref/Reuse|gravemind}}

*Tartarus attempts to activate [[Installation 05]] by forcing [[Miranda Keyes|Commander Miranda Keyes]] to insert the Index into the Control Room's [[The Core|Core]].{{Ref/Reuse|journey}}

*Commander Keyes aborts the activation of Installation 05, placing the entire [[Halo Array]] on standby status. [[343 Guilty Spark]] reveals the existence of [[Installation 00|the Ark]].{{Ref/Reuse|journey}}

*The Flood takes control of High Charity and many of its warships. [[Jiralhanae]] and [[Sangheili]] fleets remaining around the city-station continue to destroy each other.{{Ref/Reuse|journey}}

*The [[prowler]] ''[[UNSC Dusk|Dusk]]'' witnesses the battle between Sangheili and Jiralhanae held ships above [[Installation 05|Delta Halo]], both fighting each other pausing only to escalate an immediate outbreak of the [[Flood]] from the ringworld. Dusk subsequently flees the battle and links up with [[Patterson's battle group]] at Earth.<ref>'''Halo: Ghosts of Onyx''', ''page 199''</ref>

*[[Sangheili Major]] [[Voro Nar 'Mantakree|Voro 'Mantakree]] kills his [[shipmaster]], [[Tano 'Inanraree]], while he is attempting to allow the [[Flood]] to enter the ship. He then assumes command of the ship, the ''[[Incorruptible]]'', and becomes the ''de facto'' leader of the [[Second Fleet of Homogeneous Clarity]]. He leads his new forces to [[Joyous Exultation]], pursued by the [[Jiralhanae]] [[Gargantum]] and his ships.<ref>'''Halo: Ghosts of Onyx''', ''page 189''</ref>

'''November 8:'''

*''[[Halo Legends]]''

**''[[Origins]]''

**''[[The Return]]''

**''[[Wages of Sin]]'' {{Mo}}

*''[[Halo: Hunters in the Dark]]'' {{Mo}}

*''[[Halo 5: Guardians]]'' {{Mo}}

*''[[Halo: Fractures]]''

**''[[Breaking Strain]]'' {{Mo}}

*''[[Halo: Divine Wind]]'' {{Mo}}

*''[[Halo Infinite]]'' {{Mo}}

==Notes==