Organized at Camp McLain, Cincinnati, Ohio, November 7, 1861, to January 8, 1862. Left State for Grafton, W. Va., January 28, 1862. Attached to Milroy's Command, Cheat Mountain, District West Virginia, to March, 1862. Milroy's Brigade, Dept. of the Mountains, to April, 1862. Schenck's Brigade, Dept. of the Mountains, to June, 1862. 2nd Brigade, 1st Division, 1st Corps, Army of Virginia, to September, 1862. 2nd Brigade, 1st Division, 11th Army Corps, Army of the Potomac, to July, 1863. 2nd Brigade, Gordon's Division, Folly Island, S. C., 10th Army Corps, Dept. of the South, to February, 1864. 1st Brigade, Ames' Division, District of Florida, to April, 1864. District of Florida, Dept. of the South, to October, 1864. 4th Separate Brigade, Dept. of the South, to December. 1864. 1st Brigade, Coast Division, Dept. of the South, to January, 1865. 4th Separate Brigade, Dept. of the South, to July, 1865.

SERVICE:
March to Huttonville February 17-March 1, 1862. Expedition to Lost River Region April 1-12. Action at Monterey April 12. Battle of McDowell May 8. Retreat to Franklin May 10-12. Franklin May 29. Pursuit of Jackson to Shenandoah Valley. Strasburg and Staunton Road June 1-2. Mt. Jackson June 3. New Market June 4. Harrisonburg June 6. Battle of Cross Keys June 8. At Middletown till July 7, and at Sperryville till August 8. Reconnoissance to Madison Court House July 16-19. Battle of Cedar Mountain August 9. Pope's Campaign in Northern Virginia August 16-September 2. Freeman's Ford August 22. Battle of Bull Run August 29-30. Duty in the Defences of Washington, D. C., till December. Expedition from Centreville to Bristoe Station and Warrenton Junction September 25-28. March to Fredericksburg, Va., December 10-15. "Mud March" January 20-24, 1863. At Falmouth till April 27. Woodstock and Cedar Run February 26. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville May 1-5. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg July 1-3. Pursuit of Lee July 5-24. Moved to Morris Island, S. C., August 6-12. Siege operations against Fort Wagner, Morris Island, S. C., and against Fort Sumpter and Charleston August 18-September 7. Capture of Fort Wagner and Gregg, Morris Island, September 7. Moved to Folly Island, S. C., and duty there till February 22, 1864. Expedition to John's and James' Islands February 6-14. Ordered to Jacksonville, Fla., February 22, 1864. Regiment mounted and duty in the District of Florida till December 8. Expedition from Jacksonville to Cedar Creek April 2. Cedar Run April 2. Expedition to Headwaters of the St. Johns and Kissinee Rivers April 25-May 10, destroying and capturing a large amount of stores and property. Action near Jacksonville April 28. Near Camp Finnegan May 25. Expedition from Jacksonville to Camp Milton May 31-June 3. King's Creek, S. C., July 3 (Detachment). Raid from Jacksonville to Baldwin July 23-28. Near Trail Ridge July 25. Action at St. Mary's Trestle July 26. Camp Baldwin August 12. Raid on Florida Railroad August 15-19. Gainesville August 17. Expedition to Enterprise September 28. Companies "A," "B," "C," "D," "F" and "G" mustered out October and November, 1864. Balance moved to Hilton Head, S. C., December 8-10. Pocotaligo Bridge, S. C., December 29. Returned to Florida January, 1865, and duty at District Headquarters, Jacksonville, and at Tallahatchie, Fla., till July. Mustered out July 15, 1865.
Regiment lost during service 4 Officers and 110 Enlisted men killed and mortally wounded and 2 Officers and 101 Enlisted men by disease. Total 217.