Editing Battle of Sunaion

|next=[[The Reclamation]]

|result='''UNSC/Swords of Sanghelios victory'''

*[[Fireteam Osiris]] boards Sunaion's [[Guardian]]. Guardian heads to [[Genesis]].

*{{Icon|UNSC Post}} [[United Nations Space Command|UNSC]]

|forces1=*3+ {{Pattern|Lursu|brigantine}}s

*5+ {{Pattern|Rwaru|carrack}}s

*14+ {{Pattern|Hekar Taa|blockade runner}}s

*6+ {{Pattern|R'sikosh|man o' war}}s

*Dozens of {{Pattern|Mikpramu|Phantom}}s

*Dozens of {{Pattern|D'nomlhe|Banshee}}s

|forces2=*8+ {{Pattern|Lursu|brigantine}}s

*4+ {{Pattern|Rwaru|carrack}}s

*23+ {{Pattern|Hekar Taa|blockade runner}}s

*Dozens of {{Pattern|Mikpramu|Phantom}}s

*Numerous {{Pattern|D'nomlhe|Banshee}}s

*Many [[Armiger Soldier]]s

|casual2=*At least 1 {{Pattern|Lursu|brigantine}}s

*All vehicles

*Most infantry

In [[2558#October|October 2558]], [[human]] [[smart AI]] [[Cortana]] and [[Forerunner]] [[ancilla]] [[Warden Eternal]] began summoning [[Guardian]] constructs throughout the [[Milky Way|galaxy]] to their position on [[Genesis]] to allow them to enact their plans of enforcing the [[Mantle of Responsibility]] with [[artificial intelligence]]s as its "[[reclaimer]]s".<ref name="genesis">'''Halo 5: Guardians''', campaign level, ''[[Genesis (level)|Genesis]]''</ref> Meanwhile, Doctor [[Catherine Halsey]]—who had been working with [[Supreme Commander|Supreme Commander]] [[Jul 'Mdama]]'s [[Jul 'Mdama's Covenant|Covenant]]—learned of Cortana's plan while on the Forerunner planet of [[Kamchatka]] with 'Mdama. Halsey contacted the rest of the [[United Nations Space Command]] and offered her information on the Guardians and Cortana in exchange for her "rescue" from Kamchatka. In response, [[SPARTAN-IV program|Spartan-IV]] [[Fireteam Osiris]] was [[Battle of Kamchatka|dispatched]] to Kamchatka, where they retrieved Halsey and assassinated 'Mdama.<ref name="osiris">'''Halo 5: Guardians''', campaign level, ''[[Osiris (level)|Osiris]]''</ref> At the same time, [[John-117]] and the rest of [[Blue Team]] went AWOL after learning that Cortana had survived her apparent [[New Phoenix Incident|destruction]] and sought to find her. Cortana led them to the human [[Outer Colony]] of [[Meridian]], where the [[SPARTAN-II program|Spartans]] were taken to Genesis aboard a local Guardian. Fireteam Osiris, who had been in pursuit of Blue Team following their mission at Kamchatka, witnessed their departure and returned to {{UNSCShip|Infinity}} to discuss their next course of action.<ref name="evacuation">'''Halo 5: Guardians''', campaign level, ''[[Evacuation]]''</ref>

[[Arbiter]] [[Thel 'Vadam]], [[Fireteam Osiris]], and many [[Sangheili Storm]] of the [[Swords of Sanghelios]] boarded a {{Pattern|Kmiro'sish|Lich}}, which led a flight of {{Pattern|Mikpramu|Phantom}}s and {{Pattern|D'nomlhe|Banshee}}s to [[Sunaion]]. Meanwhile, [[Jul 'Mdama's Covenant]] ground and air forces at the city were assaulted by numerous Swords of Sanghelios [[warship]]s, including {{Pattern|Hekar Taa|blockade runner}}s, {{Pattern|R'sikosh|man o' war}}s, {{Pattern|Rwaru|carrack}}s, and {{Pattern|Lursu|brigantine}}s.{{Ref/Reuse|BOS}} 'Mdama's Covenant forces during the Battle of Sunaion were led by several [[Sangheili]] commanders, including [[Sangheili Warrior|General]] [[Kitun 'Arach]].{{Ref/Reuse|fifty caliber}} 'Mdama's Covenant heavily defended the city with numerous automated [[Upisa'weri-pattern Shrike|Type-56 "Shrike" Anti-Aerospace Turrets]] attacking the Swords of Sanghelios ships. The Arbiter's squadron narrowly avoided the Shrikes, while bombarding 'Mdama's Covenant ground forces, before eventually deploying 'Vadam, Osiris, and two Sangheili Storm onto a platform in the city. Immediately after landing, the Spartans and Sangheili eliminated nearby forces of 'Mdama's Covenant and disabled a Shrike turret. While 'Vadam led his forces into combat throughout Sunaion, Osiris embarked to the far end of the city where the Guardian was located, agreeing to disable Shrike anti-air turrets along the way to aid the Swords of Sanghelios. As the battle raged, more of the Swords of Sanghelios' [[fleet]]—including ''[[Havoc]]'', ''[[Onslaught (ship)|Onslaught]]'', and ''[[Revolution (ship)|Revolution]]''—arrived and the flight wing leader ordered [[Jardam Wing]], [[Lar Wing]], and [[Siqtar Wing]] to focus their fire on 'Mdama's Covenant air forces. Osiris engaged Sangheili, [[Kig-Yar]], and [[Unggoy]] forces and disabled the Shrikes to allow the Swords of Sanghelios' fleet to get closer to the city.{{Ref/Reuse|BOS}}

Meanwhile, the Prometheans were proving to be a difficult opponent to the Swords of Sanghelios and were killing many of their soldiers near the Guardian's site. As Osiris arrived back at the main part of the city, they moved past numerous dead forces from Jul 'Mdama's Covenant as the Swords of Sanghelios were pushing them into retreat. However, the Guardian began rising out of the water and entered its activation process, as it started releasing its concussive blasts upon the city. Osiris began sprinting towards the Guardian to make it aboard the construct before it departed, but the Guardian's concussive blasts began damaging the buildings they were moving on, forcing them to avoid falling debris and crashing Covenant ships. The Spartans soon encountered [[Promethean Crawler]]s attacking 'Mdama's Covenant forces. After eliminating the Crawlers, Osiris encountered 'Vadam killing a [[Promethean Knight]]. Together, the Arbiter and four Spartans fought alongside each other to eliminate Promethean forces, including Crawlers, Knights, [[Promethean Watcher|Watchers]], and [[Armiger Soldier|Soldiers]]. As the five held off against numerous Prometheans, the [[Warden Eternal]] arrived at Sunaion. However, after a long battle, Osiris and 'Vadam succeeded in destroying the Prometheans and the Warden's physical form at Sunaion.{{Ref/Reuse|BOS}}

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