Organized at Brattleboro and mustered in October 23, 1862, for nine months. Moved to Washington, D. C., October 24-27. Attached to 2nd Brigade, Abercrombie's Division, Military District of Washington, to February, 1863. 2nd Brigade, Casey's Division, 22nd Army Corps, to April, 1863. 2nd Brigade, Abercrombie's Division, 22nd Army Corps, to June, 1863. 3rd Brigade, 3rd Division, 1st Army Corps, Army of the Potomac, July, 1863.