On September 29, 1864, 2,500 Union soldiers from Maj. Gen. Benjamin Butler's Army of the James overran Major Richard Cornelius Taylor's 200-man Confederate garrison and captured the fort in the Battle of Chaffin's Farm. Brig. Gen. Hiram Burnham, a native of Maine and a brigade commander in XVIII Corps, was killed in the assault, and the Union-held fort was renamed Fort Burnham in his honor.