At Olustee, Florida on February the 20th, 1864 during the American Civil War, Seymour, commanding 45000 of Gillmore's Federal army then operating in the Department of the South, fell in with a Confederate ambush of nearly 13,000 men under Finnegan. Gillmore had ordered Seymour to give up his contemplated expedition to the Suwanee River, but the order came too late. Seymour was wholly defeated in less than half an hour, and had to retreat with great haste, leaving 1400 killed and wounded. Research Ambush At Olustee