Vya Empire Extermination

The Vya Empire Extermination was a joint-xenocidal campaign, led by the Penitent Knights Chapter and conducted alongside their fellow Adeptus Astartes Chapters, including the Astral Warriors and Storm Zealots. This campaign was conducted in the Asteria Sub-Sector, which saw fifty worlds liberated from the hostile xenos menace, by the Imperial Coalition forces.

History
Under the senior leadership of the Penitent Knights Chapter, the Astral Warriors 4th Host ("Sabertooth") participated in a war with the Penitent Knights and the Storm Zealots against a nearby xeno empire in the Asteria sub-sector named "the Vya". Fifty worlds belonged to the hostile alien species and were invaded by the Imperial Coalition. Through heavy losses, they won against the foul Chaos-worshipping xeno empire and succeeded in exterminating most of them. When the Penitent Knights were under the question of receiving a successor begrudgingly by the High Lords of Terra, the Astral Warriors declared their support in favor of the decision, deeming the Knights to be worthy of siring another fearsome Chapter of the Emperor's Finest.