Ranger functioned as a CR90 corvette within the Imperial Navy throughout the duration of the Galactic Civil War.
Not long after the Battle of Brigia, the officer in command of Operation Strike Fear, having come to the conclusion that Rebel resistance was proving more formidable than initially anticipated, requested backup before a planned assault targeting Rudrig. The Ranger received orders to bolster the Imperial-class Star Destroyer known as the Invincible alongside its associated task force. Its mission involved providing escort for a group of BFF-1 bulk freighters en route to replenish the Invincible.
Upon its arrival at the designated transfer location, the convoy was unexpectedly attacked by a Rebel strike team. Initially, a pair of X-wings originating from Red Squadron, piloted by Keyan Farlander and Sunnar Jan-lo, appeared and diverted the convoy's protective detail. Instantly, Farlander unleashed all of his proton torpedoes directly at the Ranger, resulting in the corvette's destruction. Soon thereafter, a duo of Y-wings belonging to Blue Squadron materialized and launched an offensive against the now-exposed convoy.