United Federation of Planets vs. Klingon Empire
Additional Powers:  
  Casualties: Unknown.


A torpedo impacts upon the shields of the USS Enterprise NCC-1701


The First Federation-Klingon War was a conflict fought between the United Federation of Planets and the Klingon Empire in 2267. It was the result of years of tense build-up in a cold war situation, but was ultimately inconclusive because the fighting was abruptly ended by the Organians.

Shortly before Stardate 3198.4, ongoing negotiations between the two sides were in danger of breaking down, and open warfare was becoming an unwelcome likelihood. Starfleet Command expected that the Klingons would launch a surprise attack after they issued an ultimatum demanding that the Federation withdraw from all disputed regions along their mutual border, including Donatu V, Sherman's Planet, Organia, the Archanis sector, and other territories. When the Federation refused the demands, the Klingons launched an immediate attack even before an official declaration of war was issued.

When the Starfleet starship USS Enterprise received notice of the declaration of war, it was ordered to the planet Organia, which occupied a strategic location in disputed space (now the front lines of the war). Kirk's orders were to prevent the Klingons from occupying the planet and using it as a forward base.

the Organians, fed up with the violence, revealed themselves to be extremely advanced noncorporeal beings. They altered the perceptions of all Federation and Klingon soldiers, making it seem as if weapons and instruments of war were suddenly too hot to touch. In this way, they brought about an abrupt end to the war. Ayelbourne appeared to both the Federation Council and the Klingon High Council and announced the unilateral imposition of the Treaty of Organia, which established ground rules for further interaction between the two powers, and for the resolution of the territorial disputes.