Third Battle of DS9 [Boldly They Rode]

A Joint Klingon-Federation fleet engage the 2800, a group of Jem’Hadar displaced in time by the beings native to the Bajoran Wormhole. Despite the presence of a founder, the Jem’Hadar, led by Kar’ukan, refuse to surrender. The Joint Federation-Klingon Fleet defeats the 2800, and the remaining forces follow the Changeling back into the Gamma Quadrant.