Organized at Iowa City and mustered in October 10, 1862. Ordered to Helena, Ark., arriving there November 20, 1862. Attached to 2nd Brigade, 1st Division, District of Eastern Arkansas, Dept. of Missouri, to December, 1862. 2nd Brigade, 2nd Division, District of Eastern Arkansas, Dept. of the Tennessee, to January, 1863. 2nd Brigade, 12th Division, 13th Army Corps, Dept. of the Tennessee, to July, 1863. 2nd Brigade, 3rd Division, 13th Corps, Dept. of the Tennessee, to August, 1863, and Dept. of the Gulf to June, 1864. District of LaFourche, Dept. of the Gulf, to July, 1863. 3rd Brigade, 2nd Division, 19th Army Corps, Dept. of the Gulf, to August, 1864. 4th Brigade, 2nd Division, 19th Corps, Army of the Shenandoah, Middle Military Division, to December, 1864. 2nd Brigade, 2nd Division, 19th Corps, to January, 1865. 2nd Brigade, Grover's Division, District of Savannah, Ga., Dept. of the South, to March, 1865. 1st Brigade, 1st Division, 10th Army Corps, Army of Ohio, to April, 1865. District of Savannah, Dept. of the South, to July, 1865.
SERVICE.--Hovey's Expedition from Helena, Ark., to Grenada, Miss., November 27-December 5, 1862. Gotman's Expedition up White River January 13-19, 1863. Expedition from Helena to Yazoo Pass by Moon Lake, Yazoo Pass and Coldwater and Tallahatchie Rivers February 14-April 5. Operations against Fort Pemberton and Greenwood March 13-April 5. Expedition to St. Francis River April 5-11. Moved to Milliken's Bend, La., April 11-13. Movement on Bruinsburg and turning Grand Gulf April 25-30. Battle of Port Gibson May 1. Bayou Pierrie May 2-3. Fourteen-Mile Creek May 12-13. Battle of Champion's Hill May 16. Big Black River May 17. 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 July 10-17. Ordered to New Orleans, La., August 2. At Carrollton and Brashear City until October. Western Louisiana Campaign October 3-November 30. Vermillionville, Carrion Crow Bayou, November 3. At New Iberia until December 17. Moved to New Orleans December 17, thence to Madisonville January 7, 1864, and duty there until March. Red River Campaign March 14-May 22. Advance from Franklin to Alexandria March 14-26. Battle of Sabine Cross Roads April 8. Pleasant Hill April 9. Cane River Crossing April 23-24. At Alexandria April 26-May 13. Graham's Plantation May 5. Retreat to Morganaza May 13-20. Mansura May 16. Expedition from Morganza to the Atchafalaya May 30-June 6. Moved to Fortress Monroe, thence to Washington, D. C, July. Sheridan's Shenandoah Valley Campaign August 7-November 28. Battle of Opequan, Winchester, September 19. Fisher's Hill September 22. Battle of Cedar Creek October 19. Duty in the Shenandoah Valley until January, 1865. Moved to Baltimore, Md.; thence to Savannah, Ga., January 6-20. Moved to Hilton Head, S.C., March 4; to Wilmington, N. C, March 6; to Morehead City and New Berne March 8-10; to Morehead City March 12; to Goldsboro April 9, and to Savannah, Ga., May 1-4. Duty in Georgia and South Carolina until July. Mustered out July 31, 1865.
Regiment lost while in service 6 Officers and 76 Enlisted men killed and mortally wounded and 3 Officers and 186 Enlisted men by disease. Total 271.