Organized at Camp Cameron August 27, 1861. Left State for Washington, D. C., October 3. Attached to Franklin's Division, Army of the Potomac, to March, 1862. Artillery, 1st Division, 1st Army Corps, Army of the Potomac, to April, 1862. Artillery, 1st Division, Dept. of the Rappahannock, to April, 1862. Artillery, 1st Division, 6th Army Corps, Army of the Potomac, to June, 1863. Artillery Brigade, 6th Army Corps, Army of the Potomac and Army of the Shenandoah, to October, 1864.