Changes

Having been founded sometime during the [[Dark Age of Technology]] and spared many of the horrors of the [[Age of Strife]] Isstvan III was originally assimilated into the [[Imperium]] by the [[Raven Guard]] during the [[Great Crusade]]. The Raven Guard swiftly conquered the planet, attacking from orbit at night and destroying most of its limited military capabilities in one swoop. By the time dawn rose on the [[Hive]] of '''Khry Vanak''', Isstvan III's capital, the planetary leadership and military capability had been bombed into ruin. Aftewards, the administration of the Imperium moved in the wake of the [[Astartes]] and rebuilt the planet along the lines of the [[Imperial Truth]].{{Fn|5}} ===Rebellion and Heresy===Baron '''Vardus Praal''', Imperial governor of the Isstvan system, had risen eventually rose in revolt against the Imperium. The [[Emperor of Mankind]] and the [[Council of Terra]], ignorant of the change in Horus, charged the Warmaster with crushing this rebellion. Under his command were four [[Space Marine Legion]]s; his own [[Sons of Horus]], the [[Emperor's Children]] of [[Fulgrim]], [[Mortarion]] and his [[Death Guard]], and the [[World Eaters]] led by [[Angron]]. Horus and these Primarchs had fallen to Chaos and took this opportunity to purge all suspected Loyalists from their Legions.