Organized in Iowa at large and mustered in at Council Bluffs, Ia., August 18, 1861. Ordered to St. Louis, Mo., October, 1861, and duty at Benton Barracks till February, 1862. Attached to Dept. of Missouri to March, 1862. Artillery Division, Army of Mississippi, to April, 1862. 3rd Division, Army of Mississippi, to April, 1862. Artillery, 2nd Division, Army of Mississippi, to October, 1862. Artillery, District of Corinth, to November, 1862. Artillery, 2nd Brigade, 8th Division, 13th Corps (Old), Dept. of the Tennessee, to December, 1862. Artillery, 2nd Brigade, 8th Division, 16th Corps, to April, 1863. Artillery, 3rd Division, 15th Corps, to December, 1863. Artillery, 1st Division, 16th Corps, to December, 1864. Artillery, 2nd Brigade, 1st Division (Detachment), Army of Tennessee, Dept. of the Cumberland, to February, 1865. Artillery, 1st Division, 16th Corps, Military Division West Mississippi, to March, 1865. Artillery Brigade, 16th Corps, to August, 1865.
Moved to Commerce, Mo., February 26, 1862. Operations against New Madrid, Mo., March 6-15. Actions at New Madrid March 3-4 and 13. Operations against Island No. 10 and pursuit to Tiptonville March 15-April 8. Riddell's Point March 18. Tiptonville April 8. Expedition to Fort Pillow, Tenn., April 13-17. Moved to Hamburg Landing, Tenn., April 18-22. Advance on and siege of Corinth, Miss., April 29-May 30. Action at Farmington May 9. Occupation of Corinth and pursuit to Booneville May 30-June 12. Expedition to Rienzi June 30-July 1. Duty there till August 18. March to Tuscumbia August 18-22. Moved to Iuka September 8-12. Battle of Iuka September 19.
Battle of Corinth October 3-4. Pursuit to Ripley October 5-12. At Corinth till November 2. Moved to Grand Junction November 2. Grant's Central Mississippi Campaign November, 1862, to January, 1863. At LaGrange and Germantown, Tenn., till March 14. Moved to Memphis, thence to Young's Point, La., March 14-29. At Duckport till May. Moved to join army in rear of Vicksburg, Miss., May 2-14. Mississippi Springs May 13. Jackson May 14. Siege of Vicksburg May 18-July 4. Assaults on Vicksburg May 19 and 22. Expedition to Mechanicsburg May 26-June 4. Satartia June 4. Advance on Jackson July 5-10. Siege of Jackson July 10-17. At Big Black till November. Expedition to Canton October 14-20. Bogue Chitto Creek October 17. Ordered to Memphis, Tenn., November 7, and guard Memphis & Charleston Railroad at LaGrange till February, 1864. Ordered to Vicksburg, Miss. Meridian Campaign February 6-March 2. Return to Memphis and duty there till September. Sturgis' Expedition to Ripley April 30-May 9. Smith's Expedition to Tupelo, Miss., July 5-21. Camargo's Cross Roads, near Harrisburg, July 13. Harrisburg, near Tupelo, July 14-15. Old Town Creek July 15. Smith's Expedition to Oxford, Miss., August 1-30. Tallahatchie River August 7-9. Hurricane Creek August 13-14. Mower's Expedition up White River to Duvall's Bluff, Ark., September 1-7. March through Arkansas and Missouri in pursuit of Price September 17-November 16. Moved to Nashville, Tenn., November 24-December 1. Battle of Nashville December
15-16. Pursuit of Hood December 17-28. At Eastport, Miss., till February, 1865. Moved to New Orleans, La., February 9-22. Campaign against Mobile and its defences March 17-April 12. Siege of Spanish Fort and Fort Blakely March 26-April 8. Fort Blakely April 9. Occupation of Mobile April 12. March to Montgomery April 13-25. Duty there and at Meridian, Miss., till August. Mustered out August 7, 1865.
Battery lost during service 3 Enlisted men killed and mortally wounded and 29 Enlisted men by disease. Total 32.