The 5th New Hampshire Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. The regiment sustained the greatest total combat losses of any infantry or cavalry regiment in the Union, with 295 killed and 756 wounded.
The 5th New Hampshire Infantry was organized in Concord, New Hampshire and mustered in for a three-year enlistment on October 22, 1861, under the command of Colonel Edward Ephraim Cross.
The regiment was attached to Howard's Brigade, Sumner's Division, Army of the Potomac, to March 1862. 1st Brigade, 1st Division, II Corps, Army of the Potomac, to July 1863. Concord, New Hampshire, Department of the East, to November 1863. Marston's Command, Point Lookout, Maryland, to May 1864. 1st Brigade, 1st Division, II Corps, Army of the Potomac, to June 1865.
The 5th New Hampshire Infantry mustered out of service June 28, 1865, and was discharged July 8, 1865.
Left New Hampshire for Washington, D.C., October 29, 1861. Camp at Bladensburg, Md., defenses of Washington, D.C., until November 27, 1861. Expedition to lower Maryland November 3âÂÂ11. At Camp California, near Alexandria, Va., until March 10, 1862. Scout to Burke's Station January 17, 1862 (Company A). Advance on Manassas, Va., March 10âÂÂ15. Reconnaissance to Gainesville March 20, and to Rappahannock Station March 28âÂÂ29. Warrenton Junction March 28. Moved to the Virginia Peninsula April 4. Siege of Yorktown, Va., April 5-May 4. Temporarily attached to Woodbury's Engineer Brigade. Construct Grapevine Bridge over Chickahominy May 28âÂÂ30. Battle of Fair Oaks or Seven Pines May 31-June 1. Seven days before Richmond June 25-July 1. Orchard Station June 28. Peach Orchard, Allen's Farm and Savage's Station June 29. White Oak Swamp and Glendale June 30. Malvern Hill July 1. At Harrison's Landing until August 16. Movement to Fortress Monroe, then to Alexandria and to Centreville, Va., August 16âÂÂ30. Cover Pope's retreat from Bull Run. Maryland Campaign SeptemberâÂÂOctober. Battle of South Mountain, Md., September 14 (reserve). Antietam Creek, near Keedysville, September 15. Battle of Antietam, September 16âÂÂ17. Duty at Harpers Ferry, W. Va., September 21 to October 29. Reconnaissance to Charlestown October 16âÂÂ17. Advance up Loudoun Valley and movement to Falmouth, Va., October 29-November 17. Battle of Fredericksburg, Va., December 12âÂÂ15. Burnside's Second Campaign, "Mud March," January 20âÂÂ24, 1863. Duty at Falmouth until April. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville May 1âÂÂ5. Reconnaissance to Rappahannock June 9. Gettysburg campaign June 13-July 24. Battle of Gettysburg, July 1âÂÂ3. Moved to Concord, N.H., July 26-August 3. Duty at Draft Rendezvous, Concord, N.H., until November. Moved to Point Lookout, Md., November 8âÂÂ13, and duty there guarding prisoners until May 27, 1864. Moved to Cold Harbor, Va., May 27-June 1, and joined the Army of the Potomac. Battles about Cold Harbor June 1âÂÂ12. Before Petersburg, Va., June 16âÂÂ19. Siege of Petersburg June 16, 1864, to April 2, 1865. Jerusalem Plank Road June 22âÂÂ23, 1865. Deep Bottom, north of James River, July 27âÂÂ28. Mine Explosion, Petersburg, July 30 (reserve). Demonstration north of James River August 13âÂÂ20. Strawberry Plains August 14âÂÂ18. Ream's Station August 25. Non-veterans mustered out October 12, 1864. Reconnaissance to Hatcher's Run December 9âÂÂ10. Dabney's Mills, Hatcher's Run, February 5âÂÂ7, 1865. Watkins' House March 25. Appomattox Campaign March 28-April 9. On line of Hatcher's and Gravelly Runs March 29âÂÂ30. Hatcher's Run or Boydton Road March 31. White Oak Road March 31. Sutherland Station April 2. Fall of Petersburg April 2. Sailor's Creek April 6. High Bridge and Farmville April 7. Appomattox Court House April 9. Surrender of Lee and his army. Moved to Washington, D.C., May 2âÂÂ12. Grand Review of the Armies May 23.
The regiment lost a total of 473 men during service; 18 officers and 277 enlisted men killed or mortally wounded, 2 officers and 176 enlisted men died of disease.