Organized at Camp Butler, I11., December 28, 1861, and duty there till February 11, 1862. Moved to Cairo, Ill., thence to Fort Donelson, Tenn, February 11-14. Attached to 2nd Brigade, 3rd Division, District of Cairo, February, 1862. 2nd Brigade, 4th Division, District of West Tennessee, and Army of the Tennessee to July, 1862. 2nd Brigade, 4th Division, District of Memphis, Tenn., to September, 1862. 2nd Brigade, 4th Division, District of Jackson, Tenn., to November, 1862. 2nd Brigade, 4th Division, Right Wing 13th Army Corps (Old), Department of the Tennessee, to December, 1862. 2nd Brigade, 4th Division, 17th Army Corps, to January, 1863. 2nd Brigade, 4th Division, 16th Army Corps, to July, 1863. 2nd Brigade, 4th Division, 13th Army Corps, to August, 1863. 2nd Brigade, 4th Division, 17th Army Corps, to April, 1864. 2nd Brigade, 1st Division, 17th Army Corps, to August, 1864. 1st Brigade, 2nd Division, 19th Army Corps, Department of the Gulf, to December, 1864. 2nd Brigade, Reserve Division, Military Division West Mississippi, to February, 1865. 2nd Brigade, 1st Division, Reserve Corps, Military Division West Mississippi, February, 1865. 2nd Brigade, 1st Division, 13th Army Corps, Military Division West Mississippi, to June, 1865. Department of Louisiana to January, 1866.

SERVICE - Investment and capture of Fort Donelson, Tenn., February 14-16, 1862. Occupation of Fort Henry, Tenn., February 19 to March 6. Moved to Pittsburg Landing, Tenn., March 6-18. Battle of Shiloh, Tenn., April 6-7. Advance on and siege of Corinth, Miss., April 29-May 30. March to Memphis, Tenn., via LaGrange, Grand Junction, Holly Springs, etc., June 10-July 21. Duty at Memphis, Tenn., till September 6. March to Bolivar and Hatchie River September 6-14. March to relief of Corinth, Miss., October 3. Battle of the Hatchie or Metamora October 5. Grant's Central Mississippi Campaign. Operations on the Mississippi Central R. R. November 2, 1862, to January 10, 1863. Garrison duty at Moscow, Tenn., January 13-February 5. Moved to LaFayette, thence to Memphis, Tenn., March 9. Expedition to Hernando, Miss., April 2:24. Moved to Young's Point, La., May 13-15. Siege of Vicksburg, Miss., May 18-July 4. Assaults on Vicksburg May 19 and 22. Advance on Jackson, Miss., July 5-10. Siege of Jackson, Miss., July 10-17. Assault on Jackson July 12. Reconnoissance to Pearl River July 15. Duty at Vicksburg till August 12. Moved to Natchez, Miss., August 12. Expedition to Harrisonburg, La., September 1-7. Action near Harrisonburg and capture of Fort Beauregard September 4. Moved to Vicksburg, Miss., September 16, and duty there till January 12, 1864. Red River October 14. Expedition from Natchez to Red River October 20. Regiment veteranize January 4, 1864. Veterans on furlough January 27 to March 2. Return to Vicksburg March 2. Duty there and at Big Black till July. Expedition to Benton and Yazoo City May 4-22. Actions at Benton May 7 and 9. Luce's Plantation May 13. Yazoo City May 13. Expedition to Pearl River, Miss., July 2-10. Near Jackson July 5. Jackson July 7. Ordered to Morganza, La., July 29, and duty there till August 23. Expedition to Port Hudson and Clinton, La., August 23-29. Moved to mouth of White River, Ark., September 3-8, Non-Veterans mustered out September 13. Moved to Duvall's Bluff, Ark., October 7-9. Thence to Memphis, Tenn., November 28-December 1, and duty there till December 21. Expedition to Germantown, Moscow and Wolf River, Tenn., December 21-31. Moved to Kenhersville, La., January 2, thence to Fort Gaines, Dauphin Island, Ala., February 8-10, 1865. Campaign against Mobile and its defences March 18-April 12. Siege of Spanish Fort and Fort Blakely March 26-April 8. Assault and capture of Fort Blakely April 9. Capture of Mobile April 12. Expedition to Meridian, Miss., May 12-21. Moved to New Orleans, La., May 27-28, thence to Alexandria, Natchitoches and Shreveport, La., on Red River. Moved to Grand Ecore, La., June 19, and duty there till November 20. Moved to Shreveport November 20, thence to Baton Rouge, La., December 27.

Mustered out at Baton Rouge, La., January 20, 1866, and discharged at Springfield, Ill., February 1, 1866.

Regiment lost during service 7 Officers and 74 Enlisted men killed and mortally wounded and 1 Officer and 253 Enlisted men by disease. Total 335.