Organized at Camp Todd, Troy, Ohio, September, 1861, to January, 1862. Mustered in February 1, 1862. Ordered to Paducah, Ky., February 10. Attached to District of Paducah, Ky., to March, 1862. 2nd Brigade, 5th Division, Army of the Tennessee, to April, 1862. Garrison at Fort Donelson, Tenn., to June, 1863. 1st Brigade, 3rd Division, Reserve Corps, Dept. of the Cumberland, to September, 1863. Post of Gallatin, Tenn., Dept. of the Cumberland, to April, 1864. Unassigned, 4th Division, 20th Army Corps, Dept. of the Cumberland, to August, 1864. 2nd Brigade, 3rd Division, 4th Army Corps, Army of the Cumberland, to June, 1865. 1st Brigade, 3rd Division, 4th Army Corps, to August, 1865. Dept. of Texas to November, 1865.

SERVICE:
Reconnoissance toward Columbus, Ky., February 25-March 3, 1862. Action at and occupation of Columbus March 3. Moved from Paducah, Ky., to Savannah, Tenn., March 6-10. Expedition to Yellow Creek, Miss., and occupation of Pittsburg Landing, Tenn., March 14-17. Battle of Shiloh, Tenn., April 6-7. Ordered to Fort Donelson, Tenn., April 16. Garrison duty at Fort Donelson and Clarksville, Tenn., and operations in Northern and Middle Tennessee till August. Action at Clarksville August 18. Post surrendered by Col. Mason. Fort Donelson August 25 (Cos. "A," "B," "G" and "H"). Cumberland Iron Works August 26 (Cos. "A," "B," "G" and "H"). Expedition to Clarksville September 5-10. Pickett's Hill, Clarksville, September 7. Garrison duty at Forts Donelson and Henry, Tenn., till August, 1863. Guard duty along Louisville & Nashville Railroad (Headquarters at Gallatin, Tenn.) till July, 1864. Expedition from Gallatin to Carthage October 10-14, 1863 (Detachment). Near Hartsville October 10 (Detachment). Expedition from Gallatin to Cumberland Mountains January 28-February 8. Winchester May 10 (Detachment). Relieved from garrison duty July, 1864, and ordered to join Sherman's Army before Atlanta, Ga. Atlanta (Ga.) Campaign July 31-September 8. Siege of Atlanta July 31-August 25. Flank movement on Jonesboro August 25-30. Battle of Jonesboro August 31-September 1. Operations against Hood in North Georgia and North Alabama September 29-November 3. At Athens, Ga., October 31-November 23. March to Columbia, Tenn., November 23-24. Nashville Campaign November-December. Columbia, Duck River, November 24-27. 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. Duty at Strawberry Plains and Nashville till June. Ordered to New Orleans, La., June 16, thence moved to Texas. Duty at San Antonio till November. Mustered out November 30, 1865.
Regiment lost during service 3 Officers and 66 Enlisted men killed and mortally wounded and 5 Officers and 132 Enlisted men by disease. Total 206.