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In October 2558, Fireteam Osiris deployed to Sanghelios after learning that a Guardian was there. Realizing that it was in Sunaion, Osiris enlisted the help of the Arbiter Thel 'Vadam and the Swords of Sanghelios to assist in getting to it.
Thel and Osiris's ArrivalEdit
- “And may Buck buy the first round when we get back.”
- “We get through this, I'll buy the whole damn bar.”
The Swords of Sanghelios attacked Sunaion, the Covenant's final major stronghold, they sent in various warships, Liches and Phantoms. Fireteam Osiris was deployed to the city in the midst of the battle by Thel 'Vadam's Lich.
Swords of SangheliosEdit
|Swords Flight Leader||Unknown|
|UNSC Spartan||Commander||Sarah Palmer||Survived|