Organized at Springfield, Ill., and mustered in for three months' service by Capt. John Pope, U.S. A., April 26, 1861. Moved to Cairo, Ill., and garrison duty there till July. Attached to Prentiss' Brigade. Expedition from Cairo to Little River June 22-23 (Cos. "C" and "H").

Mustered out July 26, 1861.

Regiment lost 9 by disease during service.

Organized at Cairo, Ill., July 26 to August 31, 1861. Attached to District of Cairo to September, 1861. District of Paducah, Ky., to February, 1862. 1st Brigade, 2nd Division, District of Cairo, February, 1862. 1st Brigade, 2nd Division, District of West Tennessee, and Army of the Tennessee to March, 1862. 2nd Brigade, 2nd Division, Army Tennessee, to July, 1862. 2nd Brigade, 2nd Division, District of Corinth, to September, 1862. 3rd Brigade, 2nd Division, District of Corinth, to October, 1862. 2nd Brigade, 2nd Division, District of Corinth, to November, 1862. 2nd Brigade, District of Corinth, 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. 2nd Brigade, District of Corinth, 17th Army Corps, to January, 1863. 2nd Brigade, District of Corinth, 16th Army Corps, to March, 1863. 2nd Brigade, 2nd Division, 16th Army Corps, to September, 1864. Unattached, 3rd Cavalry Division, Cavalry Corps, Army of the Cumberland, to November, 1864. Unattached, 3rd Division, Cavalry Corps, Military Division of the Mississippi, to July, 1865.

SERVICE - Duty at Cairo, Ill., till September, 1861. Expedition to Paducah, Ky., September 5-6. Occupation of Paducah September 6, and duty there till February, 1862. Skirmish at Saratoga and Eddyville, Ky., October 26, 1861 (Cos. "B," "H" and "I"). Demonstration on Columbus, Ky., November 7-9. Reconnoissance to Fort Henry, Tenn., January 15-25, 1862. Operations against Forts Henry and Heiman February 5-6. Investment and capture of Fort Donelson, Tenn., February 12-16. Expedition to Clarksville and Nashville, Tenn., February 22-March 1. Moved to Pittsburg Landing, Tenn., March 1-10. Battle of Shiloh, Tenn., April 6-7. Advance on and siege of Corinth, Miss., April 29-May 30. Duty at Corinth till March, 1863. Battle of Corinth October 3-4, 1862. Pursuit to Ripley October 5-12. Grant's Central Mississippi Campaign November and December. Reconnoissance to Tupelo, Miss., December 13-19. Expedition to intercept Forest January 2-3, 1863. Regiment mounted March 15, 1863. Dodge's Expedition to Northern Alabama April 14-May 8. Burnsville April 14. Dickson and Lundy's Lane April 17. Dickson Station April 19. Rock Cut, near Tuscumbia, April 22. Florence April 23. Tuscumbia April 23. Town Creek April 28. Expedition from Burnsville to Tupelo, Miss., May 2-8. Tupelo May 4. King's Creek, near Tupelo, May 5. Expedition from Corinth, Miss., to Florence, Ala., May 26-31. Florence May 27-28. Hamburg Landing, Tenn., May 30. Moved to Pocahontas, Tenn., June 3. Expedition to Ripley, Miss., June 8-9. Raid to Ripley and New Albany, Miss., June 13-14. Forked Deer Creek and Orizaba June 13. Operations in Northwestern Mississippi June 15-25. New Albany June 19. Mud Creek Bottom June 20. Rocky Crossing, Tallahatchie River, June 20. Scout in West Tennessee July 8-15. Jackson, Tenn., July 13. Forked Deer Creek July 15. Scout through West Tennessee July 20-August 3. Expedition from Memphis, Tenn., to Grenada, Miss., August 12-23. Grenada August 17. Scouting in West Tennessee and North Mississippi September. Montezuma, Tenn., September 16. Bear Creek October 3. Operations in North Mississippi and West Tennessee against Chalmers October 4-17. Lockhart's Mills and Salem October 8. Ingraham's Mills, near Byhalia, October 12. Quinn and Jackson's Mill, Wyatt's, Tallahatchie River, October 13. Scouting in North Mississippi, North Alabama and Central Tennessee November. At Athens till February, 1864. Near Florence December 1, 1863. Athens, Ala., January 26, 1864. Near Tennessee River January 29. Near Moulton March 21. Near Decatur April 13. Flint River, Decatur, April 17. Atlanta (Ga.) Campaign May 1 to September 8, 1864. Conduct trains of 15th and 16th Army Corps from Huntsville, Ala., to Chattanooga, Tenn., May 1-5. Led advance of the Army of the Tennessee on Dalton, Ga., and scouting on flanks of army through the Atlanta Campaign, march to the sea and through the Carolinas. Demonstration on Dalton May 5-9. Snake Creek Gap May 9. Near Resaca May 10. Resaca May 13. Ley's Ferry, Oostenaula River, May 14-15. Rome Cross Roads May 16. Advance on Dallas May 19-25. 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. Assault on Kenesaw June 27. Operations on line of Nickajack Creek July 2-5. Operations on line of the Chattahoochie River July 5-12. Peach Tree Creek July 19-20. Decatur and Battle of Atlanta July 22. 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 against Hood in North Georgia and Northern Alabama September 29-November 3. Skirmish on Cave Springs Road, near Rome, Ga., October 12-13. March to the sea November 15-December 10. Near Milledgeville November 23. Sandersville November 26. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. Whippy Swamp Creek, S.C., February 1. Rivers' and Broxton's Bridges February 2. Salkehatchie Swamp February 2-5. Edisto R. R. Bridge February 7. Walker's or Valley Bridge, Edisto River, February 8. Binnaker's Bridge, South Edisto River, February 9. About Orangeburg, North Edisto River, February 11-12. Columbia February 15-17. Phillips' Cross Roads March 4. Expedition to Florence, S.C., and skirmishes March 4-6. Fayetteville, N. C, March 11. South River March 15. Averysboro March 16. Near Benton's Cross Roads March 18. Battle of Bentonville March 19-21. Occupation of Goldsboro March 24. Advance on Raleigh April 9-13. Near Raleigh April 12. Morrisville April 13. Near Chapel Hill April 15. Bennett's House April 26. Surrender of Johnston and his army. March to Washington, D. C, via Richmond, Va., April 29-May 19. Grand Review May 24.

Mustered out July 9, 1865.

Regiment lost during service 5 Officers and 211 Enlisted men killed and mortally wounded and 1 Officer and 200 Enlisted men by disease. Total 417.