Organized at Concord and mustered in September 20, 1862. Left State for Washington, D. C, October 5. Attached to Casey's Division, Military District of Washington, to December, 1862. 1st Brigade, 3rd Division, 9th Army Corps, Army of the Potomac, to January, 1863. 3rd Brigade, 3rd Division, 9th Army Corps, to April, 1863. 3rd Brigade, 2nd Division, 7th Army Corps, Dept. of Virginia, to July, 1863. 3rd Brigade, Getty's Division, United States forces, Norfolk and Portsmouth, Dept. of Virginia and North Carolina, to April, 1864. 2nd Brigade, 1st Division, 18th Army Corps, Army of the James, to July, 1864. 1st Brigade, 1st Division, 18th Army Corps, to December, 1864. 1st Brigade, 3rd Division, 24th Army Corps, Dept. of Virginia, to June, 1865.

SERVICE.--Duty near Fort Albany, Defenses of Washington, until December 4, 1862. March to Falmouth, Va., December 5-9. Battle of Fredericksburg December 12-15. Burnside's Second Campaign "Mud March" January 20-24, 1863. Moved to Newport News, Va., February 9, thence to Suffolk March 13. Siege of Suffolk April 12-May 4. Providence Church Road, Nansemond River, May 3. Reconnaissance across the Nansemond May 4. Moved to Portsmouth May 13, thence to Yorktown. Dix's Peninsula Campaign June 24-July 7. Expedition from White House to South Anna River July 1-7. Moved to Portsmouth July 8-14; thence to Julian Creek July 30, and duty there until March 19, 1864. Moved to Yorktown March 19. Butler's operations on south side of James River and against Petersburg and Richmond May 4-28. Port Walthal Junction, Chester Station, May 6-7. Swift Creek (or Arrowfield Church) May 9-10. Operations against Fort Darling May 12-16. Battle of Drewry's Bluff May 14-16. Bermuda Hundred May 17-27. Moved to White House, thence to Cold Harbor, May 27-31. Battles about Cold Harbor June 1-12. Before Petersburg June 15-19. Siege of Petersburg and Richmond June 16, 1864, to April 2, 1865. In trenches before Petersburg until August 27, 1864. Mine Explosion Petersburg July 30 (Reserve). Duty on the Bermuda Front until September 26. Battle of Chaffin's Farm, New Market Heights, September 28-30. Fort Harrison September 29. Assigned to duty as garrison at Fort Harrison. Battle of Fair Oaks October 27-28. Duty in works before Richmond until April, 1865. Occupation of Richmond April 3. (First Regiment whose Colors were brought into the city.) Provost duty at Manchester until June. Mustered out June 22, 1865. Veterans and Recruits transferred to 2nd New Hampshire.