Terran-Klingon War

In the dark mirror universe, the Terran-Klingon War was a conflict between the Terran Empire and the Klingon Empire from 2242 to 2294, which brought the end of the Klingon Empire after the destruction of Qo'noS as well as other Klingon colonies, where a fleet of Imperial Starfleet vessels led by Fleet Admiral James T. Kirk, and the rest of the Klingons became slaves of the Terran Empire.