The Eyttyrmin Batiiv pirates maintained a stronghold on the planet Courkrus in the Khuiumin system as their main base of operations. During the Battle of Khuiumin, a number of the pirates retreated to the stronghold to prepare for a last-ditch siege against the attacking Imperial forces. A day after the pirates were crushed in orbit, the stronghold was demolished by a barrage of concussion missiles from the Victory-class Star Destroyer Crusader.