Maine. Appointed Maine. 3. Brigadier-General, February 27, 1862. （1st) Commanding brigade, Army of Kentucky; (2d) Chief-engineer (1863) to Bragg; (3d) Chief-engineer to Joseph E. Johnston (1864), Army of Tennessee.
Virginia. Appointed Virginia. 4. Brigadier-General, September 3, 1861. Commanding brigade in Army of the Potomac and Army of Northern Virginia up to July 19, 1862; then superintendent of Tredegar Iron Works, Richmond, Va., after July 19, 1862, manufacturing cannon and projectiles for Confederate States Army.
Virginia. Appointed Virginia. 27. Colonel, Twenty-second Virginia Volunteers, April 30, 1861. Commanding brigade in Southwest Virginia under (I) Wise, (2) Floyd. Resigned in 1862, and served in Ordnance Bureau.
Maryland. Appointed Maryland. 46. Brigadier-General, October 18, 1861. Commanding division of First Corps, Army of Tennessee. Killed May 16, 1863, at Barker's Creek, Miss.