May 1 Organized at Concord and mustered in for three months’ service under Colonel Mason Tappan, Lieutenant Colonel Thomas Whipple and Major Aaron F. Stevens
May 25-28 Moved to Washington, D.C. and assigned to the Department of Washington
May 29 – June 10 Camp at Kalorama Heights. Assigned to Stone’s Brigade, Patterson’s Army of the Shenandoah.
June 10-July 7 Rockville Expedition
June 17 Action at Conrad’s Ferry
June At Poolesville
July 3-7 Moved to Williamsport, Md.
July 8 To Martinsburg, Va.
July 15-17 Advance toward Winchester
July 18 Moved to Charlestown
July 21 To Harper’s Ferry
July 28 To Sandy Hook
August 2 Ordered to New Hampshire
August 9 Mustered out, expiration of term