The Enforcer was a Star Destroyer used by the Galactic Empire during the early years of its reign. Five years after the Empire's establishment, the Enforcer was stationed at Imperial marshaling station Pii along with the Compliant, another Star Destroyer. Both vessels traveled to the Nouane system after a rebel cell attacked an Imperial convoy there while it traveled to the Imperial facility Sentinel Base. However, by the time the ships arrived, the rebels had already been defeated by the Imperial-class Star Destroyer Executrix, which under the command of Moff Wilhuff Tarkin had ambushed the cell during the attack. Tarkin initially thought the arrival of the two Star Destroyers was enemy reinforcements, but was informed by a technician that the vessels were friendly.