Organized at Portsmouth, Ohio, August 5 to September 13, 1861. Left State for Kentucky September 13 and joined Gen. Nelson at Maysville, Ky. Attached to 9th Brigade, Army of the Ohio, October to December, 1861. 9th Brigade, 3rd Division, Army of the Ohio, to September, 1862. 9th Brigade, 3rd Division, 1st Corps, Army of the Ohio, to November, 1862. 1st Brigade, 1st Division, Center 14th Army Corps, Army of the Cumberland, to January, 1863. 1st Brigade, 1st Division, 14th Army Corps, to July, 1865.

SERVICE:
Capture of Hazel Green, Ky., October 23, 1861. Operations against Williams' Invasion of the Blue Grass Region, Ky., November-December. Action at Ivy Mountain November 8. Piketon, Ky., November 8-9. Duty at Bacon Creek till February, 1862. Advance on Bowling Green, Ky., February 10-15, and on Nashville, Tenn., February 22-25. Occupation of Nashville February 25 to March 17. Advance on Murfreesboro, Tenn., March 17-19. Occupation of Shelbyville and Fayetteville and advance on Huntsville, Ala., March 29-April 11. Capture of Huntsville April 11. (Pittinger's Raid on Georgia Central Railroad April 7-12, Detachment) Advance to Decatur, Ala., April 11-14. Duty along Memphis & Charleston Railroad till August. Action at Battle Creek June 21. Moved to Bridgeport and occupy Fort McCook at mouth of Battle Creek. Action at Battle Creek August 27 (6 Cos.), and at Bridgeport August 27 (4 Cos.). March to Louisville, Ky., in pursuit of Bragg, August 28-September 26. Pursuit of Bragg into Kentucky October 1-15. Battle of Perryville, Ky., October 8. March to Nashville, Tenn., October 16-November 7, and duty there till December 26. Advance on Murfreesboro, Tenn., December 26-30. Battle of Stone's River December 30-31, 1862, and January 1-3, 1863. Duty at Murfreesboro till June. Middle Tennessee or Tullahoma Campaign June 23-July 7. Hoover's Gap June 24-26. Occupation of Middle Tennessee till August 16. Passage of the Cumberland Mountains and Tennessee River and Chickamauga (Ga.) Campaign August 16-September 22. Davis Cross Roads or Dug Gap September 11. Battle of Chickamauga September 19-21. Rossville Gap September 21. Siege of Chattanooga, Tenn., September 24-November 23. Reopening Tennessee River October 26-29. Brown's Ferry October 27 (Detachment). Chattanooga-Ringgold Campaign November 23-27. Orchard Knob November 23. Lookout Mountain November 23-24. Mission Ridge November 25. Ringgold Gap, Taylor's Ridge, November 27. Demonstration on Dalton, Ga., February 22-27, 1864. Tunnel Hill, Buzzard's Roost Gap and Rocky Faced Ridge February 23-25. Atlanta (Ga.) Campaign May 1 to September 8. Demonstrations on Rocky Faced Ridge May 8-11. Buzzard's Roost Gap or Mill Creek May 9. Battle of Resaca May 14-15. Advance on Dallas May 18-25. Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5. Pickett's Mill May 27. Operations about Marietta and against Kenesaw Mountain June 10-July 2. Pine Hill June 11-14. Lost Mountain June 15-17. Assault on Kenesaw June 27. Ruff's Station July 4. Chattahoochie River July 5-17. Buckhead, Nancy's Creek, July 18. Peach Tree Creek July 19-20. Siege of Atlanta July 22-August 25. Utoy Creek August 5-7. Flank movement on Jonesboro August 25-30. Red Oak August 29. Battle of Jonesboro August 31-September 1. Operations against Hood in North Georgia and North Alabama September 29-November 3. Cassville November 7. March to the sea November 15-December 10. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. Taylor's Hole Creek, Averysboro, N. C., 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 20-May 19. Grand Review May 24. Moved to Louisville, Ky., June 6. Mustered out at Louisville, Ky., July 12, 1865.
Regiment lost during service 7 Officers and 130 Enlisted men killed and mortally wounded and 3 Officers and 192 Enlisted men by disease. Total 332.