Organized at Madison, Wis., and mustered in July 12, 1861. Ordered to Washington, D. C., July 24. Attached to King's Brigade, McDowell's Division, Army of the Potomac, to October, 1861. Hancock's Brigade, Smith's Division, Army of the Potomac, to March, 1862. 1st Brigade, 2nd Division, 4th Army Corps, Army of the Potomac, to May, 1862. 1st Brigade, 2nd Division, 6th Army Corps, Army of the Potomac, to February, 1863. Light Division, 6th Army Corps, to May, 1863. 3rd Brigade, 1st DivisionOrganized at Madison, Wis., and mustered in July 12, 1861. Ordered to Washington, D. C., July 24. Attached to King's Brigade, McDowell's Division, Army of the Potomac, to October, 1861. Hancock's Brigade, Smith's Division, Army of the Potomac, to March, 1862. 1st Brigade, 2nd Division, 4th Army Corps, Army of the Potomac, to May, 1862. 1st Brigade, 2nd Division, 6th Army Corps, Army of the Potomac, to February, 1863. Light Division, 6th Army Corps, to May, 1863. 3rd Brigade, 1st Division, 6th Army Corps, to January, 1864. 3rd Brigade, 2nd Division, 6th Army Corps, to February, 1864. 3rd Brigade, 1st Division, 6th Army Corps, Army of the Potomac, to August. Army of the Shenandoah, Middle Military Division, to December, 1864, and Army of the Potomac to July, 1865.
SERVICE.- Camp on Meridian Hill till September 3, 1861. Detached to construct Fort Marcy on north bank of the Potomac. At Camp Griffin, near Washington, D. C., till March 9, 1862. Lewinsville, Va., September 10, 1861. (Cos. "B," "C" and "G"). Reconnoissance to Lewinsville September 25. March to Flint Hill March 9, 1862, thence to near Alexandria March 16, and moved to Fortress Monroe March 23-25. Reconnoissance to Warwick Court House March 27. Advance from Newport News to Warwick River and toward Yorktown April 4-5. Siege of Yorktown April 5-May 4. Reconnoissance toward Yorktown April 16. Lee's Mills, Burnt Chimneys. April 16. Battle of Williamsburg May 5. Duty at White House till May 18. March to near Richmond May 24 and picket duty on the Chickahominy till June 5. Seven days before Richmond June 25-July 1. Garnett's Farm June 27. Savage Station June 29. White Oak Swamp and Glendale June 30. Malvern Hill July 1. At Harrison's Landing till August 16. Moved to Alexandria August 16-24, thence march to Centreville August 29-30. Maryland Campaign September 6-22. Sugar Loaf Mountain September 10-11. Crampton's Pass, South Mountain, September 14. Battle of Antietam September 16-17. At Williamsport September 18-22. Expedition to intercept Stuart's Cavalry October 11. At Hagerstown October 13-31. March to Aquia Creek November 8-18. Battle of Fredericksburg, Va, December 12-15. At White Oak Church till April, 1863. "Mud March" January 20-24. Chancellorsville Campaign April 27-May 6. Operations about Franklin's Crossing April 29-May 2. Maryes Heights, Fredericksburg, May 3. Salem Heights May 3-4. Banks┐ Ford May 4. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg , Pa., July 2-4. Near Fairfield, Pa., July 5. About Funkstown, Md., July 10-13. Detached duty at New York, Albany and Troy August-September during draft disturbances. Bristoe Campaign October 9-22. Advance to line of the Rappahannock November 7-8. Rappahannock Station November 7. Mine Run Campaign November 26-December 2. Duty at Brandy Station till April, 1864. Campaign from the Rapidan to the James River May 4-June 15. Battles of the Wilderness May 5-7; Spottsylvania May 8-12; Spottsylvania Court House May 12-21. Assault on the Salient, "Bloody Angle," May 12. 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 17-18. Siege of Petersburg till July 9. Weldon Railroad June 22-23. Moved to Washington, D. C., July 9-12. Repulse of Early's attack on Washington July 12. Non-veterans ordered to Wisconsin July 16 and mustered out August 3, 1864. Veterans consolidated to a Battalion of three Companies. Sheridan's Shenandoah Valley Campaign August 7-November 28. Battle of Opequan , Winchester, September 19. Provost duty at Winchester, Va., and at Cedar Creek, Va., till December. Seven new companies organized September, 1864, and left State for Winchester, Va., October 2. At Alexandria till October 20, then joined Regiment at Cedar Creek. Moved to Petersburg, Va., October 1-4. Siege of Petersburg December 4, 1864, to April 2, 1865. Dabney's Mills, Hatcher's Run , February 5-7, 1865. Appomattox Campaign March 28-April 9. Assault on and fall of Petersburg April 2. Pursuit of Lee April 3-9. Sailor's Creek April 6. Appomattox Court House April 9. Surrender of Lee and his army. March to Danville April 28-27, thence to Richmond, Va., and Washington, D. C., May 18-June 2. Corps Review June 8. Mustered out June 24 (three Companies) and July 11, 1865 (Regiment).
Regiment lost during service 15 Officers and 180 Enlisted men killed and mortally wounded and 2 Officers and 132 Enllsted men by disease. Total 329.
1 Source: National Park
Service, Soldiers and Sailors System; "A Compendium of the War of the Rebellion" by Frederick H. Dyer,Cosmas; An Army for Empire : The United States Army in the Spanish American War by A. Graham, (Shippensburg, PA: White Mane Publishing Co., 1993).