Organized at Keokuk February 22, 1862. Moved to St. Louis, Mo., March 19; thence to Pittsburg Landing, Tenn. Attached to 3rd Brigade, 6th Division, Army of Tennessee, to July, 1862. 3rd Brigade, 6th Division, District of Corinth, Dept. of Tennessee, to November, 1862. 3rd Brigade, 6th Division, Left Wing 13th Army Corps (Old), Dept. of Tennessee, to December, 1862. 3rd Brigade, 6th Division, 16th Army Corps, to January, 1863. 3rd Brigade, 6th Division, 17th Corps, to September, 1863. 3rd Brigade, 1st Division, 17th Corps, to April, 1864. 3rd Brigade, 4th Division, 17th Corps, to July, 1865.
Battle of Shiloh, Tenn., April 6-7, 1862. Advance on and siege of Corinth, Miss., April 29-May 30. Duty at Corinth and Bolivar till November. Battle of Corinth October 3-4. Pursuit to Ripley October 5-12. Grant's Central Mississippi Campaign November 2, 1862, to January 12, 1863. Moved to Memphis, Tenn., thence to Lake Providence, La., January 18, and duty there till April. Movement on Bruinsburg and turning Grand Gulf April 25-30. Battle of Port Gibson May 1 (Reserve). Battles of Raymond May 12;
Jackson May 14; Champion's Hill May 16; Big Black River Crossing May 17. Siege of Vicksburg May 18-July 4. Assaults on Vicksburg May 19 and 22. Expedition to Mechanicsburg May 26-June 4. Messenger's Ferry, Big Black, July 3 (Co. "G"). Advance on Jackson, Miss., July 5-10. Guarding Ammunition and Subsistance trains. Duty at Vicksburg till February, 1864. Expedition to Monroe, La., August 20-September 2, 1863. Expedition to Canton October 14-20. Meridian Campaign February 3-March 6, 1864. Veterans on furlough March and April. Moved to Clifton, Tenn., thence march to Ackworth, Ga., via Huntsville and Decatur, Ala., and Rome, Ga., April 21-June 8. Atlanta (Ga.) Campaign June 8 to September 8. Operations about Marietta and against Kenesaw Mountain June 10-July 2. Bushy Mountain June 15-17. Assault on Kenesaw June 27. Nickajack Creek July 2-5. Chattahoochie River July 6-17. Leggett's, Bald Hill, July 20-21. 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. Pursuit of Hood into Alabama October 1-26. Snake Creek Gap October 15-16. March to the sea November 15-December 10. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. Pocotaligo, S. C., January 14-16. Salkehatchie Swamps February 3-5. Rivers' Bridge February 3. South Edisto River February 9. Orangeburg February 11-12. Columbia February 15-17. Cheraw March 3. Fayetteville, N. C., March 11. Battle of Bentonville March 20-21.
Occupation of Goldsboro March 24. Advance on Raleigh April 9-13. Occupation of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. March to Washington, D. C., via Richmond, Va., April 29-May 20. Grand Review May 24. Moved to Louisville, Ky., June. Mustered out July 24, 1865.
Regiment lost during service 8 Officers and 118 Enlisted men killed and mortally wounded and 1 Officer and 260 Enlisted men by disease. Total 387.