Organized at Fort Independence June 16, 1861. Left State for Washington, D. C., July 30. Attached to Stile's Brigade, Banks' Division, Army of the Potomac, to October, 1861. Abercrombie's Brigade, Banks' Division, to March, 1862. 2nd Brigade, 1st Division, Banks' 5th Army Corps and Dept. of the Shenandoah, to May, 1862. 3rd Brigade, 2nd Division, Dept. of the Rappahannock, to June, 1862. 3rd Brigade, 2nd Division, 3rd Army Corps, Army of Virginia, to September, 1862. 3rd Brigade, 2nd Division, 1st Army Corps, Army of the Potomac, to May, 1863. 1st Brigade, 2nd Division, 1st Army Corps, to March, 1864. 1st Brigade, 2nd Division, 5th Army Corps, to June, 1864. 1st Brigade, 3rd Division, 5th Army Corps, to July, 1864.

SERVICE:
Patrol and outpost duty on the Upper Potomac till March, 1862. Action at Beller's Mill, near Harper's Ferry, W. Va., September 2, 1861. Pritchard's Mills September 18 (2 Cos.). Bolivar Heights, near Harper's Ferry, October 16. (Cos, "C," "D," "I" and "K" detached at Hancock, Md., January 5-30, 1862.) Operations in the Shenandoah Valley March and April. Occupation of Winchester, Va., March 12. Pursuit of Jackson up the Valley March 24-April 27. Guard duty on the Orange & Alexandria Railroad May 3-18. Battle of Cedar Mountain August 9. Pope's Campaign in Northern Virginia August 16-September 2. Thoroughfare Gap August 28. Battle of Bull Run August 30. Chantilly September 1. Maryland Campaign September-October. Battles of South Mountain September 14, and Antietam September 16-17. At Sharpsburg till October 30. Movement to Warrenton, thence to Falmouth, Va., October 30-November 19. Battle of Fredericksburg December 12-15. "Mud March" January 20-24, 1863. At Falmouth and Belle Plain till April 27. Chancellorsville Campaign April 27-May 6. Operations at Pollock's Mill Creek April 29-May 2. Fitzhugh's Crossing April 29-30. Battle of Chancellorsville May 2-5. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg July 1-3. Picket duty along the Rapidan till October --. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Duty on the Orange & Alexandria Railroad till April, 1864. Demonstrations on the Rapidan February 6-7. Campaign from the Rapidan to the James May-June. Battles of the Wilderness May 5-7; Spottsylvania May 8-12; Spottsylvania Court House May 12-21. Assault on the Salient May 12. North Anna River May 23-26. Jericho Ford May 23. Line of the Pamunkey June 26-28. Totopotomoy May 28-31. Cold Harbor June 1-12. Bethesda Church June 1-3. White Oak Swamp June 13. Before Petersburg June 16-18. Siege of Petersburg June 16-July 14. Mustered out August 1, 1864.
Regiment lost during service 4 Officers and 117 Enlisted men killed and mortally wounded and 40 Enlisted men by disease. Total 161.