The Liberator functioned as an EF76 Nebulon-B escort frigate for the Rebel Alliance Fleet throughout the duration of the Galactic Civil War.
The Liberator participated in a Rebel operation aimed at acquiring crucial intelligence from the Imperial Navy's CR90 corvette, the Talon Talon. During this engagement, the Liberator, in conjunction with X-wing starfighters from both Red and Blue Squadrons, confronted the escorting Imperial TIE Fighters, while Y-wings belonging to Gold Squadron successfully incapacitated the Talon.
During this particular engagement, Lieutenant Hamo Blastwell, known as Red Leader, sustained damage to his X-wing, which also resulted in the deactivation of his astromech droid. Consequently, he was compelled to dock with the Liberator for a return journey to the Independence via hyperspace.