Cabal of the White Sorrow
The Eldar Corsairs known as the Cabal of the White Sorrow plagued the area of space known as the Periphery within the newly created Calixis Sector with a series of devastating raids. The corsairs were finally brought to battle by a force consisting of Battlefleet Calixis, Explorator and Rogue Trader forces under the overall command of the Rogue Trader Kobras Aquairre. The battle turns in the Imperium's favor when Aquairre’s flagship, The Son of Seth, successfully rams and boards the corsair flagship Altar of Torment, with Kobras slaying the enemy’s Butcher Archon himself, in single combat. Soon the Cabal were shattered and their threat to the Calixis Sector was finally ended.