Organized at Manchester and mustered in September 21, 1861. Left State for Washington, D.C., November 1. Attached to McDowell's Division, Army of the Potomac, to March, 1862. 3rd Division, 1st Army Corps, Army of the Potomac, to April, 1862. Artillery, King's Division, Dept. of the Rappahannock, to June, 1862. Artillery, 1st Division, 3rd Corps, Army of Virginia, to September, 1862. Artillery, 1st Division, 1st Army Corps, Army of the Potomac, to May, 1863. 3rd Volunteer Brigade, Artillery Reserve, Army of the Potomac, to October, 1863. Artillery Brigade, 3rd Army Corps, Army of the Potomac, to March, 1864. Artillery Brigade, 2nd Army Corps, Army of the Potomac, to June, 1865.
Duty at Munson's Hill, Defenses of Washington, D.C., until March, 1862. Advance on Manassas, Va., March 10-15. Camp at Upton's Hill until April 9. Advance on Falmouth, Va., April 9-18. Occupation of Fredericksburg April 18 and duty there until May 25. McDowell's advance on Richmond May 25-29. Operations against Jackson June 1-21. Duty at Falmouth until July 28, and at Fredericksburg until August 5. Expedition to Fredericks Hall and Spotsylvania Court House August 5-8. Thornburg Mills August 5-6. Pope's Campaign in Northern Virginia August 16-September 2. Fords of the Rappahannock August 21-23. Rappahannock Station August 22. Sulphur Springs August 26. Battle of Groveton August 29. Battle of Bull Run August 30. Maryland Campaign September-October. Battle of Antietam, Md., September 16-17. Movement to Falmouth, Va., October 30-November 19. Union November 2-3. Battle of Fredericksburg, Va., December 11-15. "Mud March" January 20-24, 1863. At Belle Plains until April. Chancellorsville Campaign April 27-May 6. Operations at Pollock's Mill Creek April 29-May 2. Fitzhugh's Crossing April 29-30. Battle of Chancellorsville May 1-5. Battle of Gettysburg, Pa., July 2-4. Funkstown, Md., July 12-18. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Kelly's Ford November 7. Brandy Station November 8. Mine Run Campaign November 26-December 2. Payne's Farm November 27. At Brandy Station until April, 1864. Demonstration on the Rapidan February 6-7. Campaign from the Rapidan to the James River May 3-June 12. Battles of the Wilderness May 5-7; Spotsylvania May 8-12; Po River May 10; Spotsylvania Court House May 12-21. Assault on the Salient, "Bloody Angle," May 12. North Anna River May 23-26. Totopotomoy May 28-31. Cold Harbor June 1-12. Before Petersburg June 16-19. Siege of Petersburg June 16, 1864, to April 2, 1865. Jerusalem Plank Road June 22-23. Deep Bottom July 27-28. Mine Explosion, Petersburg, July 30 (Reserve). Demonstration north of the James August 13-20. Strawberry Plains, Deep Bottom, August 14-18. Duty in the trenches before Petersburg August 20-30. At Fort Hill until September 7. At Battery 18 until October 22. Non-Veterans mustered out September 28, 1864. Battery attached to 1st New Hampshire Heavy Artillery as Company "M" November 5, 1864, but remained detached as a Light Battery in the field. Duty in the trenches before Petersburg until March, 1865. Appomattox Campaign March 28-April 9. White Oak Road March 30-31. Sutherland Station and fall of Petersburg April 2. Sailor's Creek April 6. Farmville and High Bridge April 7. Appomattox Court House April 9. Surrender of Lee and his army. Moved to Washington, D.C., May 1-12. Grand Review May 23. Mustered out June 9, 1865.