Star Trek Online Wiki

Look through the looking glass in the latest Star Trek Online release, Season Twenty-six: Stormfall.

Check out the new Star Trek: Lower Decks themed items, now available in the Lobi Store!
And as always, Spoiler warnings ahead!


Star Trek Online Wiki
Federation-Klingon War
Date: 22562257
Cause: Federation expansionism
Result: Armistice, Installation of High Chancellor L'Rell
Faction DSC.png United Federation of Planets
Faction KDF.png Klingon Empire
Klingon Great Houses

The first Federation-Klingon War from 2256 to 2257, was fought between the United Federation of Planets and various Klingon Great Houses.


The war was instigated by T'Kuvma in an attempt to unify the Klingon Great Houses against Federation expansionism. He orchestrated the arrival of Klingon and Federation ships at an Unnamed Binary Star System and fired on the Federation fleet. The “Battle at the Binary Stars” was an early victory for the Klingons, despite the loss of T'Kuvma.

The Federation suffered early losses, including 8,186 in the first six months alone. Repeated attacks on installations such as Corvan II were slowly pushed back by covert use of Spore drive technology by the Federation. This technology was stolen from the U.S.S. Glenn and used, unsuccessfully, by J'Ula of House Mo'Kai resulting in her transport to the 25th century.

Kol of House D'Ghor, having obtained T'Kuvma's cloaking technology, installed it throughout the Klingon fleet in exchange for their fealty. Following his death, the lose unity of Klingon houses under him fell apart. Despite their lack of coherent leadership, they maintained a strong and unyielding offensive against the Federation as they carved up Federation assets and territory between them; such as Starbase 1 falling to House D'Ghor and bearing the house's insignia, rather than that of the Empire.

An armistice was signed in 2257 following the accession, with the aid of the Federation, of Chancellor L'Rell to the leadership of a unified Klingon Empire.

Missions involved[]

External links[]