War of the Serpents

The War of the Serpents was an Imperial castigation campaign carried out by the 2nd Company of the Blood Serpents Space Marine Chapter against the encroaching forces of the Chaos Serpents Chaos Warband.

History
Six Terran years after the Blood Serpents were returned to the galaxy they entered their first major conflict, the War of the Serpents. The War of the Serpents started when a Chaos Warband known as the Chaos Serpents attacked Koros. Asterog sent the 2nd Company lead by Captain Apothian moved in to remove the force, however they were quickly overwhelmed, and forced to retreat. The leader of the Chaos Serpents "War Master" Divran ordered that his forces immediately follow the retreating Blood Serpents.

Divran chased the Slitherers back to Astoran where the Blood Serpents 2nd, 6th, and 8th companies fought to hold back the might of the Chaos Serpents. The Blood Serpents used their knowledge of Astoran's tunnels to beat back the superior Chaos force, however still the Blood Serpents were losing horribly and had been pushed back to the command room when Asterog flew at Divran issuing a challenge to the leader, the two fought in a close duel with Asterog's furry overcoming the combat experience of Divran.

Right before Asterog could land the final blow on the "War Master" a warp storm hit Astoran removing the Chaos Serpents from the planet leaving the few remaining Blood Serpents breathing a heavy sigh of relief. Unbeknownst to the Blood Serpents, the Chaos Serpents were actually taken back by the Chaos Gods themselves, as they wanted "War Master" Divran to serve them as a Daemon Prince.