Battle of Sarosh

Sarosh — “Four-Three” in the Dark Angels’ reckoning — had survived the Long Night with its technology intact and at first seemed to accept the Imperial Truth. The Twenty-Second Company of the I Legion and the 4th Expeditionary Fleet pursued the Compliance listlessly, until it emerged that the Saroshi had merely feigned submission and had tried to kill the Imperial envoys, including the primarch Lion El’Jonson, with an atomic charge. At the same time a secret Chaos cult set about summoning a daemon into the material world, but the Dark Angels disrupted the ritual and destroyed the creature. Titans of the “Fire Wasps” Legio and regiments of the Imperial Army finished off the last of the revolt.