The regiment was attached to Abercrombie's 6th Brigade, 2nd Division, Department of Pennsylvania, to August 1861.
2nd Brigade, Banks' Division, Army of the Potomac, to December 1861.
Duty at Chambersburg, Pennsylvania, and at Hagerstown, Maryland, until July 4, 1861, and at Williamsport until August 16.
Moved to Darnestown September 5, then to Fort Richardson.
Service in the Defenses of Washington, D.C., and duty there until January 1862.