Organized at Rockford, Ill., and mustered in September 4, 1862. Moved to Cincinnati, Ohio, and Covington, Ky., October 10, 1862. Moved to Mt. Sterling, Ky., October 19, thence to Nicholasville, Ky., November 16-18 and to Danville, Ky., November 26. Attached to 2nd Brigade, 3rd Division, Army of Kentucky, Dept. of the Ohio, to February, 1863. 2nd Brigade, Baird's 3rd Division, Army of Kentucky, Dept. of the Cumberland, to June, 1863. 1st Brigade, 1st Division, Reserve Corps, Dept. of the Cumberland, to July, 1863. 1st Brigade, 4th Division, 14th Army Corps, Dept. of the Cumberland, to October, 1863. Wilder's Mounted Brigade, Army of the Cumberland, to December, 1863. 3rd Brigade, 2nd Division, Cavalry Corps, Army of the Cumberland, to April, 1864. 3rd Brigade, Kilpatrick's 3rd Division, Cavalry Corps, Army of the Cumberland, to October, 1864. 3rd Brigade, 3rd Division, Cavalry Corps, Military Division Mississippi, to November, 1864. 2nd Brigade, 3rd Division Cavalry Corps, Military Division Mississippi, to June, 1865.

SERVICE:
Duty at Danville, Ky., till December 26, 1862. Expedition to intercept Morgan on Louisville & Nashville R. R. December 26, 1862-January 2, 1863. Moved to Louisville, Ky., thence to Nashville, Tenn., January 26-February 6, 1863. Repulse of Forest's attack on Fort Donelson, Tenn., February 4, 1863. Duty at Nashville, Tenn., till March 5, 1863. Moved to Franklin, Tenn., March 5, and pursuit of Van Dorn March 5-12. Operations about Columbia March 9-10. At Brentwood till April 8. Repulse of Van Dora's attack on Franklin April 10. At Franklin till June 2. Moved to Triune June 2. Action with Wheeler at Triune June 11. Middle Tennessee (or Tullahoma) Campaign June 24-July 7. Occupation of Shelbyville July 1. March to Wartrace July 3. Detached from Brigade July 6 and attached to Wilder's Mounted Infantry Brigade July 10. Mounted July 22. Occupation of Middle Tennessee till August 16. Passage of Cumberland Mountains and Tennessee River and Chickamauga (Ga.) Campaign August 16-September 22. Rossville and Ringgold, Ga., September 11. Lee and Gordon's Mills September 11-13. Leet's Tan Yard, or Rock Springs, September 12-13. Alexander's Bridge and Dyer's Ford September 18. Battle of Chickamauga, Ga., September 19-21. Operations against Wheeler and Roddy September 30-October 17. Hill's Gap, Thompson's Cove, near Beersheba, October 3. Murfreesboro Road October 4. Near McMinnville October 4-5. Farmington October 7. Sim's Farm, near Shelbyville, October 7. Guard Tennessee River north of Chattanooga till October 27. Moved to Bridgeport, Ala., and duty there till January 15, 1864. Ringgold Gap, Ga., November 27, 1863 (Co. "E"). Operations in North Alabama January 23-29. Bainbridge Ferry January 25 (Co. "I"). Sweetwater and Florence January 25. At Huntsville, Ala., till April 6. Moved to Ringgold, Ga., April 6. Nickajack Trace (or Gap) April 23. Reconnoissance from Ringgold toward Tunnel Hill April 29. Skirmish at Tunnel Hill April 29. Stone Church May 1. Leet's Cross Roads May 2. Atlanta (Ga.) Campaign May to September. Near Ringgold Gap May 2. Near Nickajack Gap May 7. Demonstrations on Resaca May 8-13. Near Resaca May 13. Battle of Resaca May 14-15. Calhoun May 15. 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 l0-July 2. Assault on Kenesaw June 27. Operations on line of Chattahoochie River July 3-17. Siege of Atlanta July 22-August 25. Fairburn August 15. Sandtown August 15. Kilpatrick's Raid around Atlanta August 18-22. Jonesboro August 19. Lovejoy Station August 20. Flank movement on Jonesboro August 25-30. Fairburn August 27-28. Jonesboro August 30. Flint River Station August 30. Battle of Jonesboro August 31-September 1. Lovejoy Station September 2-6. Glass Bridge September 2. Operations against Hood and Forest in North Georgia and North Alabama September 29-November 3. Camp Creek September 30. Sweetwater and Noyes Creek, near Powder Springs, October 1-3. Van Wert October 9-10. March to the sea November 15-December 10. Bear Creek Station November 16. Near Clinton and Walnut Creek November 20. East Macon November 20. Near Macon November 21. Near Waynesboro November 27-28. Thomas' Station December 3. Waynesboro December 4. Ebenezer Creek December 8. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. Near Barnwell, S.C., February 6. Aiken and Johnson's Station February 11. Phillips' Cross Roads March 4. Averysboro, Taylor's Hole Creek, N.C., March 16. Bentonville March 19-21. Occupation of Goldsboro March 24, and of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. Duty in Department of North Carolina till June. Mustered out at Concord, N.C., June 21, and discharged at Chicago, Ill., July 10, 1865. Recruits transferred to 65th Illinois Infantry, June 21, 1865.

Regiment lost during service 1 Officer and 51 Enlisted men killed and mortally wounded and 2 Officers and 127 Enlisted men by disease. Total 181.