Organized at Harrisburg April 30, 1861. Moved to Lancaster May 9, and duty there till June 3. At Chambersburg June 3-16. Attached to Negley's 5th Brigade, Keim's 2nd Division, Patterson's Army. At Hagerstown, Md., June 16-20. Duty near Sharpsburg till July 2. Falling Waters July 2. Company "A" captured by Ashby's Cavalry and sent to Richmond, Va. Occupation of Martinsburg July 3. Advance to Bunker Hill July 15. Moved to Charlestown July 18. Skirmish at Charlestown July 21. Moved to Harper's Ferry July 21, thence to Carlisle, Pa., and mustered out August 7, 1861.