Organized at Mansfield, Ohio, October 3 to November 14, 1861. Moved to Louisville, Ky., December 18; thence to Bardstown and to Hall's Gap, Ky., January 13, 1862. Attached to 20th Brigade, Army of the Ohio, to January, 1862. 20th Brigade, 6th Division, Army of the Ohio, to September, 1862. 20th Brigade, 6th Division, 2nd Corps, Army of the Ohio, to November, 1862. 3rd Brigade, 1st Division, Left Wing 14th Army Corps, Army of the Cumberland, to January, 1863. 3rd Brigade, 1st Division, 21st Army Corps, Army of the Cumberland, to October, 1863. 3rd Brigade, 2nd Division, 4th Army Corps, Army of the Cumberland, to June, 1865. 2nd Brigade, 2nd Division, 4th Army Corps, to August, 1865. Dept. of Texas to December, 1865.

SERVICE:
March to Munfordsville, Ky., thence to Nashville, Tenn., February 7-March 13, and to Savannah, Tenn., March 29-April 6. Battle of Shiloh, Tenn., April 6-7. Advance on and siege of Corinth, Miss., April 29-May 30. Pursuit to Booneville June 1-12. Duty along Memphis & Charleston Railroad in Alabama and at Bridgeport, Ala., till August 21. March to Louisville, Ky., in pursuit of Bragg August 21-September 26. Pursuit of Bragg into Kentucky October 1-15. Battle of Perryville, Ky., October 8 (Reserve). March to Nashville, Tenn., October 15-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. Reconnoissance to Nolensville and Versailles January 13-15. Middle Tennessee (or Tullahoma) Campaign June 23-July 7. Occupation of Middle Tennessee till August 16. Passage of the Cumberland Mountains and Tennessee River and Chickamauga (Ga.) Campaign August 16-September 22. Reconnoissance toward Chattanooga September 7. Lookout Valley September 7-8. Occupation of Chattanooga September 9. Lee and Gordon's Mills September 11-13. Battle of Chickamauga September 19-20. Siege of Chattanooga, Tenn., September 24-November 23. Chattanooga-Ringgold Campaign November 23-27. Orchard Knob November 23-24. Mission Ridge November 25. Pursuit to Graysville November 26-27. March to relief of Knoxville, Tenn., November 28-December 8. Operations in East Tennessee till April, 1864. Atlanta (Ga.) Campaign May 1 to September 8. Demonstrations on Rocky Faced Ridge and Dalton May 8-13. Buzzard's Roost Gap or Mill Springs May 8-9. Battle of Resaca May 14-15. Near Calhoun May 16. Adairsville May 17. Near Kingston May 18-19. Near Cassville May 19. Advance on Dallas May 22-25. 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. Assault on Kenesaw June 27. Ruff's Station, Smyrna Camp Ground, 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. Flank movement on Jonesboro August 25-30. Battle of Jonesboro August 31-September 1. Lovejoy Station September 2-6. Operations in North Georgia and North Alabama against Hood October 4-26. Nashville Campaign November-December. Columbia, Duck River, November 24-27. Spring Hill November 29. Battle of Franklin November 30. Battle of Nashville December 15-16. Pursuit of Hood to the Tennessee River December 17-28. Moved to Huntsville, Ala., and duty there till March, 1865. Operations in East Tennessee March 15-April 22. At Nashville, Tenn., till June. Moved to New Orleans, La., June 16; thence to Texas and duty at San Antonio till December. Mustered out November 30, 1865, and honorably discharged from service January 2, 1866.
Regiment lost during service 8 Officers and 114 Enlisted men killed and mortally wounded and 6 Officers and 129 Enlisted men by disease. Total 257.