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The Night Lords, Emperor's Children and Alpha Legion persisted far beyond the 7 year date in the Imperium. + details
|Outcome =Loyalist Victory<br>*Imperial territory purged <br>*Traitor remnants flee
|Combatant1 =[[File:Aquila1transparent.png|30px]] [[Imperium]]
|Combatant2 =[[File:Chaos.png|30px]] [[Chaos]] (led by the [[Traitor Legion]]s):<br>[[Image:IW Icon.png|20px]] [[Empire of Iron]]<br>[[Image:WB Icon.png|20px]] [[Colchisian Satrapy]]<br>[[Image:NL Icon.png|20px]] [[Carrion Realms]]<br>[[File:DM Icon.png|20px]] [[Dark Mechanicus|New Mechanicum]]
|Commanders1 =[[File:UL Icon.png|20px]] [[Lord Commander]] [[Roboute Guilliman]] (WIA)<br>[[File:DA Icon.png|20px]] [[Primarch]] [[Lion El'Jonson]] (WIA)<br>[[File:WS Icon.png|20px]] [[Primarch]] [[Jaghatai Khan]] (MIA)<br>[[File:IF Icon.png|20px]] [[Primarch]] [[Rogal Dorn]] (MIA)<br>[[File:RG Icon.png|20px]] [[Primarch]] [[Corvus Corax]]<br>[[File:SAL Icon.png|20px]] [[Primarch]] [[Vulkan]]<br>[[File:SW Icon.png|20px]] [[Primarch]] [[Leman Russ (Primarch)|Leman Russ]]
|Commanders2 =[[File:SOH icon.png|20px]] [[First Captain]] [[Ezekyle Abaddon]]<br>[[File:WB Icon.png|20px]] [[Primarch]] [[Lorgar]]<br>[[File:WE Icon.png|20px]] [[Primarch]] [[Angron]]<br>[[File:TS Icon.png|20px]] [[Primarch]] [[Magnus]]<br>[[File:EC Icon.png|20px]] [[Primarch]] [[Fulgrim]]<br>[[File:IW Icon.png|20px]] [[Primarch]] [[Perturabo]]<br>[[File:DG Icon.png|20px]] [[Primarch]] [[Mortarion]]<br>[[File:NL Icon.png|20px]] [[Primarch]] [[Konrad Curze]] (KIA)<br>[[File:AL Icon.png|20px]] [[Primarch]] [[Alpharius]] (KIA?)
The '''Great Scouring''' was the [[Imperium]]'s counter-offensive against the rebel armies of [[Horus]], following the defeat of the [[Horus Heresy]] in c.[[M31]]{{Fn|1}}. [[Horus]]'s campaign to strike towards [[Terra]] to achieve a quick and decisive victory had ultimately been defeated. The rebels were broken and in retreat, and Imperial forces now had the job of reacquiring all the territory they had captured. The Great Scouring saw the first mass galaxy-wide purge carried out by the Imperium as it sought to erase the taint of Horus's treachery from its realm.{{Fn|1}}
It took seven years for the Imperium to drive the bulk most of the Traitors into the [[Eye of Terror]],{{Fn|17}}but the bulk of the [[Night Lords]], but {{Fn|18}} [[Emperor's Children]],{{Fn|5}} and [[Alpha Legion]]{{Fn|6c}} continued to operate in Imperial space far beyond this date. Large-scale battles are were still known to have been waged against Traitor holdouts for at least over a century after.{{Fn|5}}
==Overview==
*030.[[M31]]: The [[Bitter War]] on [[Colchis]] concludes with the fall of the [[Word Bearers]] homeworld.{{Fn|6a}}
*121.[[M31]]: [[Roboute Guilliman]] is mortally wounded by [[Fulgrim]] during the [[Battle of Thessala]] and put into stasis.{{Fn|5}}
====Undated====
*[[Lion El'Jonson]] goes missing following the [[destruction of Caliban]] and the [[Dark Angels]] begin their hunt for [[the Fallen]].{{Fn|8c}}
*[[Alpharius]] or [[Omegon]] is believed to be killed by [[Roboute Guilliman]] on [[Eskrador]], but the twin Primarch's fate remains unclear.{{Fn|6c}}
*[[Jaghatai Khan]] is thought lost in the [[Webway]] during battles against [[Dark Eldar]] raiders in the [[Yasan Sector]].{{Fn|9}}
*The [[Night Lords]] launch numerous ambushes that take a high toll on their Imperial pursuers.{{Fn|10}}
*While leading a genocidal rampage across the [[Eastern Fringe]], [[Konrad Curze]] is killed by an agent of the [[Officio Assassinorum]].{{Fn|7}}
*The Decades after the Horus Heresy and years after Curze's death, the Night Lords' main force is defeated by an Ultramarines-led coalition in the [[Battle of Tsagualsa]]. The Night Lords]] launch numerous ambushes that take are shattered as a high toll on their Imperial pursuersLegion.{{Fn|1018}}
*[[Rogal Dorn]] leads the [[Imperial Fists]] against the [[Iron Warriors]] on [[Hevaran]].{{Fn|15}}
*[[Rogal Dorn]] is thought killed in a [[Black Crusade]].{{Fn|13}}
**{{Endn|16d}}: Chapter 39
*{{Endn|17}}: [https://archive.ph/057KB Warhammer Community: The Scouring timeline – How the Warhammer Studio worked with Black Library authors on the new series] ''(archived from [https://www.warhammer-community.com/en-gb/articles/xmlkha5o/the-scouring-timeline-how-the-warhammer-studio-worked-with-black-library-authors-on-the-new-series/ the original] 12 March 2026, last accessed 12 March 2026)''
*{{Endn|18}}: [[Void Stalker (Novel)]], Chapters 12-14
{{HHBattles}}