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, "," 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.