Organized under authority of the War Department, at Camp Scott, Staten Island, N.Y., as 4th
Regiment, Sickles' Brigade, July to October, 1861. Left State for Washington, D.C., October 8,
1861. Attached to Sickles' Brigade, Division of the Potomac, October, 1861. Sickles' Brigade,
Hooker's Division, Army of the Potomac, to March, 1862. 2nd Brigade, 2nd Division, 3rd Army
Corps, Army of the Potomac, to March, 1864. 2nd Brigade, 4th Division, 2nd Army Corps, to May,
1864. 4th Brigade, 3rd Division, 2nd Army Corps, to July, 1864. 1st Brigade, 3rd Division, 2nd
Army Corps, to June, 1865.
SERVICE.--Duty in the Defenses of Washington, D. C, until March, 1862. Expedition to Matthias
Point November 9, 1861. Advance on Manassas, Va., March 10, 1862. Expedition from Dumfries to
Fredericksburg and capture of stores March 18. Reconnaissance from Liverpool Point to Stafford
Court House and action at Stafford Court House April 4. Ordered to the Peninsula April. Siege of
Yorktown April 10-May 4. Battle of Williamsburg May 5. Battle of Seven Pines or Fair Oaks May
31-June 1. Seven days before Richmond June 25-July 1. Battles of Oak Grove June 25; Peach Orchard
and Savage Station June 29; White Oak Swamp and Glendale June 30; Malvern Hill July 1 and August
5. At Harrison's Landing until August 16. Movement to Fortress Monroe, thence to Centreville,
August 16-26. Pope's Campaign in Northern Virginia August 26-September 2. Action at Bristoe
Station or Kettle Run August 27. Battles of Groveton August 29; Bull Run August 30. Duty in the
Defenses of Washington until November. At Fairfax Station Va., until November 25. Operations on
Orange & Alexandria Railroad November 10-12. Battle of Fredericksburg, Va., December 12-15. At
Falmouth until April 27, 1863. "Mud March" January 20-24. Operations at Rappahannock Bridge and
Grove Church February 5-7. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville
May 1-5. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg, Pa., July 1-3. Pursuit
of Lee to Manassas Gap, Va., July 5-24. Wapping Heights, Va.. July 23. Duty on line of the
Rappahannock until October. Bristoe Campaign October 9-22. Advance to line of the Rappahannock
November 7-8. Kelly's Ford November 7. Mine Run Campaign November 26-December 2. Payne's Farm
November 27. Duty near Brandy Station, Va., until May, 1864. Demonstration on the Rapidan
February 6-7. Campaign from the Rapidan to the James River May 3-June 15. Battles of the
Wilderness May 5-7. Spottsylvania May 8-12. Po River May 10. Spottsylvania Court House May 12-21.
Assault on the Salient or "Bloody Angle" May 12. Harris Farm or Fredericksburg Road May 19.
North Anna River May 23-26. On line of the Pamunkey May 26-28. Totopotomoy May 28-31. Cold Harbor
June 1-12. Before Petersburg June 16-18. Siege of Petersburg June 16, 1864, to April 2, 1865.
Jerusalem Plank Road, Weldon Railroad. June 22-23, 1864. Demonstration on North side of the James
July 27-29. Deep Bottom July 27-28. Demonstration on North side of the James August 13-20.
Strawberry Plains, Deep Bottom, August 14-18. Ream's Station August 25. Poplar Springs Church
September 29-October 2. Boydton Plank Road. Hatcher's Run, October 27-28. Reconnaissance to
Hatcher's Run December 9-10. Dabney's Mills, Hatcher's Run, February 5-7, 1865. Watkins' House
March 25. Appomattox Campaign March 28-April 9. Boydton Road and White Oak Ridge March 29-31.
Crow's House March 31. 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 2-12. Grand Review May 23. Mustered out at Washington, D.C., June 29, 1865.
Regiment lost during service 18 Officers and 138 Enlisted men killed and mortally wounded and 1 Officer and 76 Enlisted men by disease. Total 233.