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|Casualties2 =Unknown

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When the Red Corsairs attacked most of the White Scars' [[Brotherhood (White Scars)|Brotherhoods]] were fighting elsewhere and even [[Chapter Master|Great Khan]] [[Jubal Khan|Jubal]] was commanding their forces in [[Third War for Armageddon|Armageddon]]. This led [[Chogoris]]' defence to be led by [[Barutai Khan]], but the Chapter's [[Astropath]]s hurled messages into the [[Warp]], for their forces to return and defend their Homeworld. The Red Corsairs soon invaded in large numbers, but under Barutai's leadership, the Chapter was not overwhelmed. In time, some of the White Scar's Brotherhoods were able to return and Jubal Khan later arrived with his strike force. Even with the Great Khan's efforts though, the Chapter did little but slow the Red Corsairs' onslaught. Worse followed, as the [[Great Rift]] was created and the [[Noctis Aeterna]] allowed [[Daemons]] to materialize on Chogoris, which then fought beside the Red Corsairs. Within days these new foes slaughtered hundreds of thousands of the world's tribal population and they risked extinction. In order to save Chogoris' surviving population, Jubal Khan had his warriors strike recklessly at the [[Chaos]] forces, hoping to goad as many as possible into following the White Scars back to their [[Fortress Monastery]], [[Quan Zhou]]. The Chaos forces fell for the bait and so, months after the Red Corsairs first made planetfall, the final fate of the White Scars was to be decided in a bloody siege of their Fortress Monastery.{{Fn|1e}}

With the galaxy now rent by the Great Rift, the age of Chaos was nigh and Huron Blackheart knew he had ample time to return and conquer the Chapter's Homeworld.{{Fn|1e}}

The Chapter suffered heavy losses, with most of the Chapter's Brotherhoods left devastated. Even their Khans suffered heavily, as [[Seglei Khan]] died in the War{{Fn|1c}} and the wounds [[Jurga Khan]] was dealt led him to be interred within a [[Dreadnought]].{{Fn|1b}}

However, recently [[Indomitus Crusade]] forces of Tertius Fleet's Battle Group Delphi II have rendezvoused with the Scars. They brought with them reinforcements and technology for [[Primaris Space Marine]] production.{{Fn|1f}} The White Scars have received reinforcements from several of their successors, such as the [[Marauders]], [[Rampagers]], and [[Destroyers]].{{Fn|4}}

==={{Endn|Conflicting sources}}===

The original account of the battle put the salvation of Chogoris coming from [[Roboute Guilliman]] and the [[Indomitus Crusade]].{{Fn|2}} This is not present in the more recent account given in [[Codex Supplement: White Scars (8th Edition)]] but instead has the Crusade arriving after the planet had already been secured.{{CME}}

*[[Confession of Pain (Short Story)]]

*1: [[Codex Supplement: White Scars (8th Edition)]]:

**{{Endn|1a}}: pgs. 8-9