Battle of Tralch

The Battle of Tralch was an Imperial defensive campaign carried out by the Thunder Guardians Space Marine Chapter upon the Imperial world of Keddian against invading greenskins. But unfortunately, the Orks were not the only threat they faced, as they soon faced the unforeseen foe in the form of the plague ridden Death Guard Traitor Legion.

Background
In the swamps of Tralch on Keddian, the Thunder Guardians were dispatched to defend the town of Muhdhold against invading Orks. Once the attacking orks are defeated, the surviving greenskin forces were chased into the swamp. As they Space Marines pursued their xenos foes, they were ambushed by Heretic Astartes of the Death Guard Traitor Legion. The Death Guard managed to slay many of the valiant Astartes and pilfered the fallen Space Marines' precious gene-seed. As they departed the planet with their ill-gotten prize in tow, their vessel collided with a massive Ork Rok that had purposely set course for the surface of the Imperial moon. Few survived, including their leader Dormun. The remaining Thunder Guardians managed to hold out and were eventually saved by their fellow battle-brothers.