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The '''{{PAGENAME}}''' is a [[Sector]] of [[Imperial]] space that contains the [[White Scars]] [[Chapter|Chapter's]] [[Adeptus Astartes Homeworld|Homeworld]], [[Chogoris]].{{Fn|1}} It lies near the southern regions of the [[Maelstrom Zone]].{{Fn|3}}

The sector was occupied by both followers of [[Horus]] and [[Dark Eldar]] raiders during the chaos of the [[Horus Heresy]]. During the [[Great Scouring]], the White Scars [[Yasan Campaign|battled]] both the traitors and Dark Eldar to liberate the Sector. In one such battle, [[Jaghatai Khan]] was thought lost within the [[Webway]].{{Fn|1}}

In the wake of the [[Great Rift|Great Rift's]] creation, the Sector is now infested by the [[Red Corsairs]] and the [[Gartuli System|Gartuli]] and [[Thaxis System|Thaxis]] [[System]]s have fallen to them. While the White Scars have [[War for Chogoris|scoured]] most of the Red Corsairs forces from their Homeworld, much of the [[Chogoris System]] is still afflicted by the Traitors.{{Fn|2}} In addition, the Yasan Sector lies close to the Red Corsairs' domain: the great [[Warp Storm]] known as [[The Maelstrom]]. Although the Yasan Sector's higher position in the galactic plane has historically spared it from the worst of the Maelstrom's influence, the warp storm has grown in size due to the presence of the Great Rift, resulting in a number of worlds of the Yasan Sector being afflicted by the tides of [[Chaos]]. This has come in the form of widespread [[mutation]] and [[Daemon]]ic incursions.{{Fn|3}}

[[Image:YasanSector.jpg|thumb|right|220px|The {{PAGENAME}}{{Fn|1}}]]

*[[Chogoris System]]{{Fn|2}}

*[[Gartuli System]]{{Fn|2}}

*[[Thaxis System]]{{Fn|2}}

*[[List of sectors]]

*{{Endn|1}}: [[Codex: Space Marines (8th Edition)]], pg. 34

*{{Endn|2}}: [[Codex Supplement: White Scars (8th Edition)]], pgs. 8-9 — ''Chogoris''