Federation-Klingon War

There have been several conflicts fought between the Klingon Empire and the United Federation of Planets.
* Federation-Klingon War (2256-57)
* Federation-Klingon War (2267)
* Federation-Klingon War (2372-73)
* Federation-Klingon War (alternate timeline) (after 2344)
;You may also be looking for
* Federation-Klingon Cold War