Idolater Crusades

The Idolater Crusades was a series of Imperial castigation actions carried out as a part of a larger campaign by the Void Paladins Space Marine Chapter to eradicate the threat of the Forces of Chaos in the Eastern Fringe.

Background
Massive crusades fought by the entire Chapter against Chaos Space Marine Warbands in the Eastern Fringe. Even with the Forces of Chaos using daemons and other warpcraft, they were killed or pushed out of the sector after 98 years of fighting. The chapter lost over 85% of its number in this crusade and didn't return to full strength for almost a millennium. In this time of recovery the first Rorarii regiments were created to fill the gap left by the lack of Astartes.