Magrin War

The Magrin War was an Imperial defensive campaign carried out by the Mordekaisers Space Marine Chapter to defend an Imperial sector from encroaching Forces of Chaos comprised of three separate Chaos Warbands - The Senseless Noise, Venom Spiders and the Desolate Sons. Despite the odds arrayed against them, the Mordekaisers eventually emerge victorious, but at great cost - suffering the loss of nearly an entire company.

Background
The entire Mordekaisers Chapter meet the sudden appearance of three traitor warbands: The Senseless Noise, Venom Spiders and the Desolate Sons. The war encompasses the entire sector until the traitors are broken and scattered. Victory is costly, for the 5th Company was almost destroyed in an ambush that claimed it's Hauptmann and there is doubt as to whether the Desolate Sons were prevented from their goal.