Sanghelios global war

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Operation: ATHENA



Sanghelios global war
Battle of Sunaion.



c. October 17, 2558[1]-October 27, 2558[2][3]


Sanghelios, Urs system[2]


Swords of Sanghelios victory

  • Jul 'Mdama's forces routed and considered functionally destroyed.[3][2]
  • Fireteam Osiris leaves in a Guardian.[4]

General Kitun 'Arach



Near total



A global war on the Sangheili homeworld of Sanghelios erupted in late 2558.[2] Fighting would involve the Swords of Sanghelios, Jul 'Mdama's Covenant, minor forces of the United Nations Space Command (UNSC), and finally the newly formed Created.[5]



Following the Covenants failure at the Absolute Record, Jul Mdama pivoted to trying to take control of Sanghelios. To this end, Covenant forces would take control of the Argent Moon and scour it in hopes of finding any materiel to help with this goal.[6]


Prior to the attack on Sanghelios, the Swords of Sanghelios launched their own assault on Hesduros, hoping to kill 'Mdama and destroy his Covenant for good. The Swords didn't manage to achive there main aims, but the offensive did devastate much of the Covenants major infrastructure across Hesduros. Following this defeat, Jul and his forces had to completely abandoned Hesduros.[7]

Leading into the conflict, Sanghelios was in a tense state.[8]


Ignition of conflict[edit]

Around October 17, 2558, Jul 'Mdama's forces besieged Sanghelios.[1] As their forces attacked, other assets on the planet rose up and Sanghelios burst into a worldwide conflict.[2] The majority of city-states experienced heavy fighting.[1] Despite the conflicts on the planet previous to this point, this was the first time that fighting on Sanghelios was characterized as a global war.[2]

Although the Arbiter did not formally request support from the UNSC, personnel on the UNSC Infinity were given a warning order that intervention to support the Swords of Sanghelios might be required.[1]

During the assault, Jul 'Mdama's Covenant would gain control of Sunaion and began to plan for a strike on Vadam while the Arbiter defended the inland portions of Vadam. However, local Swords of Sanghelios forces would be made aware of this and would establish a forward operating base in the ruins of Nuusra. They would hope to strike the Covenant at Sunaion.[9]

A member of the House of Vadam, Murok 'Vadam, would divulge the location of where the Arbiter was stationed to the Covenant in exchange for power and prestige.[10]

Covenant Kraken fighting over Nuusra.

Fighting at Nuusra[edit]

"With Arbiter's victories and the death of Jul 'Mdama, the Covenant grow desperate. They have began an assault on 'Vadam lands, targeting Arbiter specifically."
Mahkee 'Chava to Fireteam Osiris.[11]
Main article: Battle of Nuusra

On the morning[12] of October 27, 2558, the Covenant made a last-ditch attempt to kill the Arbiter[2][11] at Nuusra. Partway through the battle, the Spartans of Fireteam Osiris would assist Swords forces in repelling the Covenant and extracting the Arbiter Thel 'Vadam.[11]

After discussions took place between human forces and the Swords,[13] Fireteam Osiris would move to a Forerunner installation to retrieve a Constructor.[14]

With it, the humans modified it to activate the Guardian beneath the sea city of Sunaion. Sunaion was also at this point, the Covenant's last stronghold. Together, the humans and the Swords of Sanghelios left Nuusra to attack.[15]

Covenant and Swords forces fighting in Sunaion.

Last stand[edit]

"The Covenant soldiers will hear the Guardian wake from its slumber, they will look up over the bodies of their brothers, through the smoke of their burning city, they will look to the horizon as their holy idol rises from the sea and forsakes them. And that is when the Covenant dies."
— Thel 'Vadam to a few of his officers.[13]
Main article: Battle of Sunaion

The Swords of Sanghelios moved into Sunaion deploying Thel himself and Fireteam Osiris. They would split up with Osiris moving to take out anti-aircraft weapons. At least one ship in the air above the battle fell into the Csurdon Sea below.

Osiris eventually went into the under city fighting Covenant forces there. The Guardian buried below began to rise, and with it Created forces joined the fray.[4]

After Fireteam Osiris managed to make there way aboard the departing Guardian, the Swords would finish off the remaining Covenant forces.


Created occupation[edit]

Main article: Subjugation of Sanghelios

Following the conclusion to the battle of Sunion, Cortana would send a second Guadian to Sanghelios, wiping out most of the remaining Covenant ships, as well as shutting down power across the hemisphere.[16] The Created would eventually take total control of Sanghelios, as well as placing an administrator in charge of the planet.[17]


List of appearances[edit]


  1. ^ a b c d Halo: Official Spartan Field Manual, page 95
  2. ^ a b c d e f g Halo: Legacy of Onyx, chapter 21
  3. ^ a b Halo Mythos, page 195
  4. ^ a b Halo 5: Guardians, campaign level Battle of Sunaion
  5. ^ Halo 5: Guardians, Campaign
  6. ^ Halo Mythos, page 185
  7. ^ Halo: Legacy of Onyx, chapter 5
  8. ^ Halo Waypoint - Universe, Locations, Sanghelios (Retrieved on Apr 13, 2016) [local archive] [external archive]
  9. ^ Halo Waypoint - Universe, Locations, Sunaion (Retrieved on Apr 13, 2016) [local archive] [external archive]
  10. ^ Halo 5: Guardians: Mission Intel - Before the Storm - Sangheili Security Officer's Log
  11. ^ a b c Halo 5: Guardians, campaign level Swords of Sanghelios
  12. ^ Halo 5: Guardians: Mission Intel - Enemy Lines - Unggoy Personal Log 023
  13. ^ a b Halo 5: Guardians, campaign level Alliance
  14. ^ Halo 5: Guardians, campaign level Enemy Lines
  15. ^ Halo 5: Guardians, campaign level Before the Storm
  16. ^ Halo: Bad Blood, chapter 1
  17. ^ Halo: Outcasts, chapter 1