Organization

• 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 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 3-18.
• 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.
• Nonveterans 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 23-27, 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).

Casualties

• Regiment lost during service 15 Officers and 180 Enlisted men killed and mortally wounded and 2 Officers and 132 Enlisted men by disease. Total 329.