(1818-1883), an American soldier, born at Cumberland, Md. He graduated at West Point, entered the army and as second lieutenant took part in the Seminole War (1839-1842). He performed garrison service during the Mexican War, and later took part in several indian campaigns and in the capture of John Brown at Harper's Ferry. He became brigadier general of volunteers in 1861, was promoted to be major general and took part in several western campaigns. After a forced retirement, on account of wounds, in 1864, he joined Grant's army in Virginia and was of the greatest service in preventing Lee's escape from Richmond. He was made brigadier general in the regular army, retired in 1880 and by special act of Congress was made major general in 1881.