Organized by consolidation of 6th Company Sharpshooters. Organized at Rochester, N.Y., September 13, 1862. 7th Company Sharpshooters organized at Jamestown September 12, 1862. 8th Company Sharpshooters organized at Staten Island January, 1863, and 9th Company Sharpshooters organized at Staten Island for nine months' service January, 1863. Ordered to Suffolk, Va., February 3, 1863. Attached to Gibb's Provisional Brigade, Division at Suffolk, 7th Army Corps, Dept. of Virginia, to April, 1863. 1st Brigade, 1st Division, 7th Army Corps, to July, 1863. 1st Brigade, 1st Division, 1st Army Corps, Army of the Potomac, to March, 1864. 1st Brigade, 4th Division, 5th Army Corps, to August, 1864. 3rd Brigade, 3rd Division, 5th Army Corps, to September, 1864. 1st Brigade, 3rd Division, 5th Army Corps, to July, 1865.
SERVICE.--Siege of Suffolk, Va., April 12-May 4, 1863. Action at Suffolk April 17. Dix's Peninsula Campaign June 24-July 7. Expedition from White House to Bottom's Bridge July 1-7. Baltimore Cross Roads July 2. Ordered to Washington, D.C., July 8; thence to Join Army of the Potomac in the field. Joined 1st Army Corps July 15. Pursuit of Lee July 15-24. Duty on line of the Rappahannock until October. Bristoe Campaign October 9-22. Haymarket October 19. Advanced to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Demonstration on the Rapidan February 5-7, 1864. Campaign from the Rapidan to the James May 3-June 15. Battles of the Wilderness May 5-7; Laurel Hill May 8; Spottsylvania May 8-12; Spottsylvania Court House May 12-21. Assault on the Salient, "Bloody Angle," May 12. North Anna River May 23-26. Jericho Ford May 23. On line of the Pamunkey May 26-28. Totopotomoy May 28-31. About Cold Harbor June 1-12. Bethesda Church June 1-3. Before Petersburg June 16-18. Siege of Petersburg June 16, 1864, to April 2, 1865. Weldon Railroad August 18-21, 1864. Reconnaissance to Boydton Road October 8. Boydton Plank Road, Hatcher's Run, October 27-28. Warren's Raid on Weldon Railroad, Hicksford Raid, December 7-12. Dabney's Mills February 5-7, 1865. Appomattox Campaign March 28-April 9. White Oak Road March 31. Five Forks April 1. Fall of Petersburg April 2. Pursuit of Lee April 3-9. Appomattox Court House April 9. Surrender of Lee and his army. Moved to Washington, D.C., May. Grand Review May 23. Mustered out 6th, 7th and 8th Companies July 10, 1865. 9th Company August 5, 1863.
Battalion lost during service 23 Enlisted men killed and mortally wounded and 1 Officer and 38 Enlisted men by disease. Total 62.