Organized at Madison, Wis., and mustered in April 30, 1862. Left State for Washington, D. C., June 2; thence moved to Hampton, Va., June 8, and to Norfolk, Va., June 29. Attached to District of Norfolk and Portsmouth, Va., 7th Army Corps, Dept. of Virginia, to April, 1863. Reserve Brigade, 3rd Division, 7th Army Corps, to June, 1863. Wistah's Independent Brigade, 7th Army Corps, to July, 1863. Yorktown, Va., Dept. of Virginia and North Carolina, to August, 1863. Newport News, Va., Dept. of Virginia and North Carolina, to October, 1863. New Berne, N. C., Dept. of Virginia and North Carolina, to April, 1864. 3rd Brigade, 1st Division, 18th Army Corps, Army of the James, Dept. of Virginia and North Carolina, to June, 1864. 2nd Brigade, 2nd Division, 18th Army Corps, to August, 1864. Norfolk, Va, to October, 1864. 3rd Brigade, 2nd Division, 18th Army Corps, to December, 1864. 1st Brigade, 3rd Division, 24th Army Corps, to July, 1865. 1st Independent Brigade, 24th Army Corps, to August, 1865.Garrison duty at Norfolk, Va., till April, 1863. Ordered to Suffolk, Va., April 14. Siege of Suffolk April 14-May 4. Action at Edenton Road, Suffolk, April 24. Operations on Norfolk & Petersburg Railroad May 15-18. Near Providence Church May 17. Moved to Norfolk June 17; thence to Yorktown June 18. Dix's Peninsula Campaign June 24-July 7. Garrison duty at Yorktown till August 16. At Newport News till October 8. Moved to New Berne, N. C., October 8-11. Outpost and picket duty there till April, 1864. Company "A" detached at Evans' Mills, Company "B" at Brier Creek, and Company "F" at Havelock Station till February, 1864. Operations about New Berne against Whiting January 18-February 10, 1864. Beech Grove and Batchelor's Creek, New Berne, February 1-3, 1864. Expedition to relief of Plymouth April 19-24 (Co. "A"). Moved to Yorktown April 26-28. Butler's operations on south side of the James River and against Petersburg and Richmond May 4-28. Occupation of Bermuda Hundred May 5. Operations against Fort Darling May 12-16. Battle of Drury's Bluff May 14-16. Bermuda Hundred June 16-July 20. Assaults on Petersburg June 15. Port Walthal June 16-17. In trenches before Petersburg till August. Veterans on furlough August 13 to October 10. Non-Veterans assigned to provost duty at Norfolk, Va., August to October. Regiment moved to Aiken's Landing, thence to Chafflin's Farm and operations against Richmond from north side of the James River till April, 1865. Battle of Fair Oaks October 27-28, 1864. Occupation of Richmond April 3, 1865, and provost duty there till April 28. Non-Veterans mustered out April 28, 1865. Provost duty at Fredericksburg, Va., till July 24, and at Warrenton, Va., till August 4. Moved to Richmond, Va., and mustered out August 9, 1865.