In the dark mirror universe, the ISS Enterprise (ICC-1701-A) was a Terran vessel and a refit Constitution-class cruiser in service for Imperial Starfleet for the Terran Empire in the late-23rd century. It was commanded by Admiral James T. Kirk in 2286, until he was promoted to Fleet Admiral in 2294 by The Grand Commander (DMU), when he led his fleet to Qo'noS which is their final battle in the Terran-Klingon War.