Organized at Portsmouth May 31 to June 8, 1861. Moved to Washington, D.C., June 20-23, and duty there until July 16. Attached to Burnside's Brigade, Hunter's Division, McDowell's Army of Northeastern Virginia, to August, 1861. Hooker's Brigade, Division of the Potomac, to October, 1861. 1st Brigade, Hooker's Division, Army of the Potomac, to March, 1862. 1st Brigade, 2nd Division, 3rd Army Corps, Army of the Potomac, to February, 1863. New Hampshire, Dept. of the East, to June, 1863. 3rd Brigade, 2nd Division, 3rd Army Corps, Army of the Potomac, to July, 1863. Marston's Command, Point Lookout, Md., District of Saint Marys, to April, 1864. 2nd Brigade, 2nd Division, 18th Army Corps, Army of the James, Dept. of Virginia and North Carolina, to June, 1864. Provost Guard, 18th Army Corps, to August, 1864. 1st Brigade, 1st Division, 18th Army Corps, to October, 1864. 3rd Brigade, 1st Division, 18th Army Corps, to December, 1864. 3rd Brigade, 3rd Division, 24th Army Corps, to June, 1865.

SERVICE.--Advance on Manassas, Va., July 16-21, 1861. Battle of Bull Run, Va., July 21. Duty in the Defenses of Washington, D.C., at Bladensburg and Budd's Ferry, Md., until April, 1861. Moved to the Peninsula, Va., April 4-8. Siege of Yorktown April 10-May 4. Battle of Williamsburg May 5. Occupation of Williamsburg until May 24. Battle of Fair Oaks, Seven Pines, May 31-June 1. Picket affair June 23-24. Seven days before Richmond June 25-July 1. Oak Grove June 25. Savage Station June 29. White Oak Swamp, Charles City Cross Roads and Glendale June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Malvern Hill August 5. Movement to Centreville August 16-26. Pope's Campaign in Northern Virginia August 26-September 2. Bristoe Station or Kettle Run August 27. Battle of Groveton August 29. Battle of Bull Run August 30. Chantilly September 1. Duty in the Defenses of Washington until November. Operations on the Orange & Alexandria Railroad October 10-12. Movement to Falmouth, Va., November 18-28. Battle of Fredericksburg December 12-15, "Mud March" January 20-24, 1863. Operations at Rappahannock Bridge and Grove Church February 5-7. Ordered to Concord, N.H., February 26. Duty there and at Fort Constitution, Portsmouth, until May 25. Moved to Washington, D.C., May 25-28, and duty there until June 11. Moved to Hartwood Church, Va., June 11, and rejoin Army of the Potomac. Battle of Gettysburg, Pa., July 2-4. Williamsport July 11-12. Manassas Gap, Va., July 22-23. Ordered to Point Lookout, Md., July 25, and duty there guarding prisoners until April, 1864. Ordered to Yorktown, Va., April 7; thence to Williamsport April 22. Butler's operations on south side of James River and against Petersburg and Richmond May 4-28. Capture of City Point and Bermuda Hundred May 5. Chester Station May 6-7. Swift Creek or Arrowfield Church May 9-10. Operations against Fort Darling May 12-16. Drury's Bluff May 14-16. Bermuda Hundred May 16-27. Port Walthal May 26. Moved to White House, thence to Cold Harbor May 27-June 1. Battles about Cold Harbor June 1-12. Non-Veterans left front June 8, and mustered out June 21, 1864. Regiment detached from Brigade June 9, and assigned to duty at Corps Headquarters until August 13. Assaults on Petersburg June 15-19. Siege of Petersburg June 16, 1864, to April 2, 1865. Duty in trenches before Petersburg August 18 to September 1. Ordered to Wilson's Landing September 1 and duty there until October 1. Expedition to Barnett's Ferry September 27-28. Moved to Aikens Landing October 1. Duty in trenches before Richmond until March 3, 1865. Battle of Fair Oaks October 27-28, 1864. Moved to Fort Monroe, Va., March 4-5; thence to White House Landing March 18 to establish a depot for General Sheridan's Cavalry, and duty there until March 24. March to lines north of the James March 24-28. Occupation of Richmond April 3. Duty there and at Manchester until July. Provost duty in District of Northern Neck, Dept. of Virginia, until December. Mustered out December 19, 1865.