Admiral Ackbar, a Victory-class Star Destroyer, functioned as the flagship for Admiral Nek Bwua'tu of the Galactic Alliance Defense Force in the period following the conclusion of the Yuuzhan Vong War.
The Admiral Ackbar, named to honor the deceased Mon Calamari Admiral, was a member of the new Victory-class Star Destroyer generation put into service by the Galactic Alliance to assist in combating pirate activity. The Admiral Ackbar gained a reputation as a notable pirate hunter, and its crew reportedly considered it a privilege to serve under Admiral Bwua'tu. A larmalstone bust depicting Ackbar was located within the ship's Tactical Salon.
These modernized Victory-class Star Destroyers were equipped with a turret, nearly the size of the bridge itself, situated on the upper hull. Each turret housed one of the asteroid-tugging tractor beams that Lando Calrissian had sold to the Defense Force. The Admiral Ackbar participated in the blockade of the Murgo Choke during the Dark Nest crisis. During the Battle of the Murgo Choke at the start of the Swarm War, UnuThul and Alema Rar's forces later seized control of the Star Destroyer.
Subsequently, this vessel became integrated into the Killik fleet during the conflict. Due to its presence within the Killik fleet, the Chiss incorrectly concluded that the Galactic Alliance had allied themselves with the Killiks. Near the war's end, during the Battle of Tenupe, Luke Skywalker and a squad of YVH 5 Bugcruncher war droids successfully managed to reclaim the ship.
During the Second Galactic Civil War, the Ackbar was once again under Admiral Bwua'tu's command, participating in the blockade of Corellia alongside other Galactic Alliance fleet elements. When Corellia attempted to enlist the Hapes Consortium to their cause through an armed coup, Bwua'tu deployed the Ackbar and his other forces to Hapes with the objective of reinforcing the Queen Mother's fleet.