Purgation of Rutara

The Purgation of Rutara was an Imperial castigation campaign conducted by the Seraphim of the Abyss. This was one of their first recorded engagements as a Chapter.

History
Being the first official war the Seraphim of the Gryphon undertook, the outcome would shape the Chapter and be a test of their fury. So soon after the climax of the Great Heresy, Imperial worlds were very susceptible to uprisings of their populace. One such planet was the case with the entire Planetary System of Rutara. So, the entire system was put to the sword and bolter by the sons of the Lion. Furious and unrelenting in their assaults of Rutara's worlds, the Seraphim were eventually aware of the reason the system had revolted- a Space Marine of dark armour had orchestrated the uprisings of the populace against the Imperium. And when this Astartes was cornered in the Governor's Palace upon Rutara Primaris, he was subjected to a long and drawn out vengeance by the knights old enough to remember the world of Caliban. But now they were also truly aware of the existence of Luther's traitorous cohorts deposited around the galaxy. The Fallen Angels.