Organized at Dubuque and mustered in October 3, 1862. Moved to St. Paul, Minn., October 11, 1862, Companies "A," "B," "C," "E," "F" and "G." Moved to Mille Lac's, Minn., October 17, thence moved to Cairo, Ill., November 4. Companies "D," "I," "H" and "K" at Fort Snelling, Minn., till November 1. Moved to Cairo, Ill., November 1. Regiment moved to Memphis, Tenn., November 20. Attached to District of Memphis, Dept. Tennessee, to December, 1862, District of Jackson, Tenn., 16th Army Corps, Army Tennessee, to March, 1863. 3rd Brigade, 3rd Division, 16th Army Corps, to August 1863. True's Brigade, Arkansas Expedition to November, 1863. Gilbert's Brigade, District of Memphis, 5th Division, 16th Corps, to January, 1864. 2nd Brigade, 3rd Division, 16th Army Corps, to December, 1864. 2nd Brigade, 2nd Division (Detachment), Army Tennessee, Dept. of the Cumberland, to February, 1865. 2nd Brigade, 2nd Division, 16th Army Corps, Military Division West Mississippi, to August, 1865.
Duty at Jackson, Tenn., and guard railroad from Corinth, Miss., to Memphis, Tenn., till June 2, 1863. Guard Memphis & Charleston Railroad at Moscow till August 20. Moved to Memphis, thence to Helena and Brownsville, Ark., August 20-24. Steele's Arkansas Expedition August 24-September 10. Bayou LaFourche and capture of Little Rock September 10. At Little Rock till November 15. Moved to Memphis Tenn., November 15, and duty there till January 28 1864. Moved to Vicksburg, Miss., January 28. Meridian Campaign February 3-March 5. Meridian February 14-15. Marion February 15-17. Union February 21-22. Canton February 28. Red River Campaign March 10-May 22. Fort DeRussy March 14. Occupation of Alexandria March 16. Henderson's Hill March 21. Battle of Pleasant Hill April 9. Cloutiersville and
Cane River Crossing April 22-24. At Alexandria April 27-May 13. Moore's Plantation May 5-7. Bayou Boeuf May 7. Bayou LaMourie April 12. Retreat to, Morganza May 13-20. Mansure May 16.
Yellow Bayou May 18-19. Moved to Vicksburg, Miss.; thence to Memphis, Tenn., May 20-June 10. Action at Lake Chicot, Ark., June
6-7. Smith's Expedition to Tupelo July 5-21. Poctotoc July 11. Camargo's Cross Roads, near Harrisburg, July 13. Tupelo July 14-15. Old Town Creek July 15. Smith's Expedition to Oxford, Miss., August 1-30. Tallahatchie River August 7-9. Abbeville and Oxford August 12. Abbeville August 13. Mower's Expedition up White River to Duvall's Bluff, Ark., September 1-6. March through Arkansas and Missouri in pursuit of Price September 17-November 18. Moved to Nashville, Tenn., November 25-December 1. Battle of Nashville, Tenn., December 15-16. Pursuit of Hood to the Tennessee River December 17-28. At Eastport, Miss., till February 9, 1865. Expedition from Eastport to Iuka January 9. Moved to New Orleans, La., February 9-22. Campaign against Mobile and its Defences March 8-April 12. Siege of Fort Blakely and Spanish Fort March 26-April 8. Assault and capture of Fort Blakely April 9. Occupation of Mobile April 12. March to Montgomery April 13-25, and duty there till July. Moved to Vicksburg, Miss., July 14; thence to Clinton, Iowa, July 15-August 3. Mustered out August 8, 1865.
Regiment lost during service 1 Officer and 23 Enlisted men killed and mortally wounded and 2 Officers and 167 Enlisted men by disease. Total 193.