The 2391st Battle Squadron functioned as a unit within the Imperial Navy throughout the duration of the Galactic Civil War.
This particular task force included a single Imperial-class Star Destroyer, alongside a pair of Victory-class Star Destroyers. Additionally, it featured a Immobilizer 418 cruiser, eight Strike-class medium cruisers and smaller cruisers, a Ton-Falk-class escort carrier, four frigates, and a half-dozen corvettes.
It was initially believed that this task force met its end not long after the Battle of Endor. Nevertheless, the 2391st reappeared some years afterwards in the Kalinda system, receiving assistance from both the 6783rd Troop Line and the 1249th Mobile Corps. The Kalindan Deep Space Fleet engaged them in combat, ultimately defeating them and forcing their retreat from the system.