Organized at Chillicothe, Ohio, and mustered in December 30, 1861. Duty at Camp Logan till January 24, 1862. Moved to Grafton, W. Va., thence to Fetterman January 24-26, and to New Creek February 3. Attached to Cheat Mountain, District Western Virginia, to March, 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 October, 1862. 2nd Brigade, 2nd Division, 11th Army Corps, Army of the Potomac, to October, 1863, and Army of the Cumberland, to April, 1864. 3rd Brigade, 3rd Division, 20th Army Corps, Army of the Cumberland, to July, 1865.

SERVICE:
Expedition to Romney, W. Va., February 6-7, 1862, and to Moorefield February 12-16. Moved to Clarksburg February 18, and duty there till March 20. Moved to Weston, W. Va., March 20, and duty there till April 10. Moved to join Milroy at Monterey. Battle of McDowell May 8. Woodstock June 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. Expedition to Madison Court House July 16-19. Pope's Campaign in Northern Virginia August 16 to September 2. Freeman's Ford August 22. Battles of Bull Run August 29-30. Duty in the Defences of Washington, D. C., till December. Reconnoissance to Bristoe Station and Warrenton Junction September 25-28. March to Fredericksburg, Va., December 12-16. "Mud March" January 20-24, 1863. At Falmouth till April 27. 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 to Manassas Gap, Va., July 5-24. Camp at Bristoe till September 24. Moved to Bridgeport, Ala., September 24-October 3. Duty at Bridgeport and Stevenson, Ala., till October 24. Re-opening Tennessee River October 24-29. Battle of Wauhatchie, Tenn., October 28-29. Chattanooga-Ringgold Campaign November 23-27. Orchard Knob November 23. Tunnel Hill November 24-25. Mission Ridge November 25. March to relief of Knoxville, Tenn., November 28-December 17. Regiment re-enlisted January 1, 1864, and Veterans on Furlough till March. Atlanta (Ga.) Campaign May 1-September 8. Demonstrations on Rocky Faced Ridge May 8-11. Buzzard's Roost Gap May 8-9. Battle of Resaca May 14-15. Cassville May 19. New Hope Church May 25. Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5. Operations about Marietta and against Kenesaw Mountain June 10-July 2. Pine Hill June 11-14. Lost Mountain June 15-17. Gilgal or Golgotha Church June 15. Muddy Creek June 17. Noyes Creek June 19. Kolb's Farm June 22. Assault on Kenesaw June 27. Ruff's Station July 4. Chattahoochie River July 5-17. Peach Tree Creek July 19-20. Siege of Atlanta July 22-August 25. Operations at Chattahoochie River Bridge August 26-September 2. Occupation of Atlanta September 2-November 15. March to the sea November 15. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. Lawtonville, S. C., February 2. Reconnoissance on Goldsboro Road, N. C., March 14. Taylor's Hole Creek, Averysboro, March 16. Battle of Bentonville March 19-21. Occupation of Goldsboro March 24. Advance on Raleigh April 10-14. Occupation of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. March to Washington, D. C., via Richmond, Va., April 29-May 20. Grand Review May 24. Moved to Louisville, Ky., June and duty there till July. Mustered out July 20, 1865.
Regiment lost during service 4 Officers and 167 Enlisted men killed and mortally wounded and 1 Officer and 149 Enlisted men by disease. Total 321.