Organized at Harrisburg September to December, 1861. At Camp Cameron, Harrisburg, till December 19, 1861. Moved to Louisville, Ky., December 19, and ordered to Jeffersonville, Ind. Duty there till February, 1862. Served unattached, Army Ohio, to March, 1862. Negley's 7th Independent Brigade, Army Ohio (1st Battalion). Post of Nashville, Tenn., Dept. Ohio (2nd Battalion). 23rd Independent Brigade, Army Ohio (3rd Battalion), to September, 1862. Cavalry, 8th Division, Army Ohio (1st and 2nd Battalions), Unattached, Army Ohio (3rd Battalion), to November, 1862. 1st Brigade, Cavalry Division, Army Ohio, to January, 1863. 1st Brigade, 2nd Division, Cavalry Corps, Army Cumberland, to November, 1864. 2nd Brigade, 2nd Division, Cavalry Corps, Military Division Mississippi, to July, 1865.

SERVICE:
1st Battalion (Cos. "A," "D," "H" and "I") sent to Columbia, Tenn. Expedition to Rodgersville May 13-14. Lamb's Ferry, Ala., May 14. Advance on Chattanooga June 1. Sweeden's Cove June 4. Chattanooga June 7-8. Occupation of Manchester July 1. Paris July 19. Raid on Louisville & Nashville Railroad August 19-23. Huntsville Road, near Gallatin, August 21. Brentwood September 19-20. Near Perryville October 6-7. Chaplin Hills October 8. Expedition from Crab Orchard to Big Hill and Richmond October 21. 2nd Battalion (Cos. "C," "E," "F" and "K"), under Gen. Dumont, in garrison at Nashville, Tenn., and scouting in that vicinity till November. 3rd Battalion (Cos. "B," "G," "L" and "M"), in Duffield's Command, scouting in West and Middle Tennessee. Lebanon and pursuit to Carthage May 5. Readyville June 7. Murfreesboro July 13. Sparta August 4-5 and 7. Regiment reunited in November, 1862. Nashville November 5. Reconnoissance from Nashville to Franklin December 11-12. Wilson's Creek Pike December 11. Franklin December 12. Near Nashville December 24. Advance on Murfreesboro December 26-30. Lavergne December 26-27. Battle of Stone's River December 30-31, 1862, and January 1-3, 1863. Overall's Creek December 31. Manchester Pike and Lytle's Creek January 5, 1863. Expedition to Franklin January 31-February 18. Unionville and Rover January 31. Murfreesboro February 7. Rover February 13. Expedition toward Columbia March 4-14. Unionville and Rover March 4. Chapel Hill March 5. Thompson's Station March 9. Rutherford Creek March 10-11. Snow Hill, Woodbury, April 3. Franklin April 10. Expedition to McMinnville April 20-30. Middletown May 21-22. Near Murfreesboro June 3. Operations on Edgeville Pike June 4. Marshall Knob June 4. Shelbyville Pike June 4. Scout on Mlddleton and Eagleville Pike June 10. Scout on Manchester Pike June 13. Expedition to Lebanon June 15-17. Lebanon June 16. Middle Tennessee or Tullahoma Campaign June 23-July 7. Guy's Gap or Fosterville and capture of Shelbyville June 27. Expedition to Huntsville July 13-22. Reconnoissance to Rock Island Ferry August 4-5. Sparta August 9. Passage of Cumberland Mountains and Tennessee River, and Chickamauga (Ga.) Campaign August 16-September 22. Calfkiller River, Sparta, August 17. Battle of Chickamauga September 19-20. Rossville, Ga., September 21. Re-enlisted at Huntsville, Ala., November 28, 1863. Atlanta Campaign May to September, 1864. Demonstration on Rocky Faced Ridge May 8-11. Battle of Resaca May 14-15. Tanner's Bridge and Rome May 15. Near Dallas May 24. Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5. Near Big Shanty June 9. Operations about Marietta and against Kenesaw Mountain June 10-July 2. McAffee's Cross Roads June 11. Powder Springs June 20. Noonday Creek June 27. Line of Nickajack Creek July 2-5. Rottenwood Creek July 4. Rossville Ferry July 5. Line of the Chattahoochie July 6-17. Garrard's Raid on Covington July 22-24. Siege of Atlanta July 22-August 25. Garrard's Raid to South River July 27-31. Flat Rock Bridge July 28. Kilpatrick's Raid around Atlanta August 18-22. Flint River and Jonesborough August 19. Red Oak August 19. Lovejoy Station August 20. Operations at Chattahoochie River Bridge August 26-September 2. Operations in North Georgia and Ncrth Alabama against Hood September 29-November 3. Carter Creek Station October 1. Near Columbia October 2. Near Lost Mountain October 4-7. New Hope Church October 5. Dallas October 7. Rome October 10-11. Narrows October 11. Coosaville Road, near Rome, October 13. Near Summerville October 18. Little River, Ala., October 20. Leesburg October 21. Ladiga, Terrapin Creek, October 28. Ordered to Louisville, Ky., to refit; duty there till December 28. March to Nashville, Tenn., December 28-January 8, 1865, thence to Gravelly Springs, Ala., January 25, and duty there till March. Wilson's Raid to Selma, Ala., and Macon, Ga., March 22-April 24. Selma April 2. Occupation of Montgomery April 12. Occupation of Macon April 20. Duty in Georgia and at Nashville, Tenn., till August. Mustered out August 13, 1865.

Regiment lost during service 8 Officers and 94 Enlisted men killed and mortally wounded and 5 Officers and 185 Enlisted men by disease. Total 292.