Purge of Lithios Prime

The Purge of Lithios Prime was an Imperial castigation campaign carried out by the Dominators Space Marine Chapter against a Chaos cult of Slaanesh upon the Imperial world of Lithios Prime.

Background
The Purge of Lithios Prime was at first an easy mission for the Dominators, but after awhile it turned into a complete and abject failure. A cult of Slaanesh managed to summon a Keeper of Secrets upon the soil of Lithios Prime. The world was slowly transforming into a daemon world. Rapidly withdrawing from the surface, the Dominators proceeded with two-stage cyclonic torpedo orbital bombardment, subjecting the doomed world to Exterminatus. Around 350 battle-brothers were killed by the Exterminatus as well as any daemons on the surface of the planet.