The 8th New Jersey Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.
The 8th New Jersey Infantry Regiment was organized at Camp Olden in Trenton, New Jersey, for three years service and mustered in September 14, 1861, under the command of Colonel Adolphus J. Johnson.
The regiment was attached to Casey's Provisional Brigade, Division of the Potomac, October 1861.
3rd Brigade, Hooker's Division, Army of the Potomac, to March 1862.
3rd Brigade, 2nd Division, III Corps, Army of the Potomac, to March 1864.
3rd Brigade, 3rd Division, II Corps, to July 1865.
The 8th New Jersey Infantry mustered out of service July 17, 1865.
Action at Oak Grove, near Seven Pines, June 25.
Pope's Campaign in northern Virginia August 26-September 2.
Action at Bristoe Station (or Kettle Run) August 27.
Operations at Rappahannock Bridge and Grove Church February 5–7.
Pursuit of Lee to Manassas Gap, Va., July 5–24.
Strawberry Plains, Deep Bottom, August 14–18.
Boydton Plank Road, Hatcher's Run, October 27–28.
Warren's Raid on Weldon Railroad December 7–12.
Dabney's Mills, Hatcher's Run, February 5–7, 1865.
Boydton and White Oak Roads March 30–31.