Opequan (American Civil War).

Fought September 19, 1864, between 13,000 Confederates, under General Early, and 45,000 Federals, under General Sheridan. Success at first inclined to the side of the Southerners, but their left wing was broken by a charge of 7,000 cavalry, under Custer, and the Confederates were completely routed and fled in confusion.