23rd Iowa Volunteer Infantry Regiment The 23rd Regiment Iowa Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War . Service . Organized at Des Moines and mustered in September 19 , 1862 . Ordered to St . Louis , Mo . Attached to Dept . Missouri to February , 1863 . 2nd Brigade , 2nd Division , Army of Southeast Missouri , Dept . Missouri , to March , 1863 . 2nd Brigade , 14th Division , 13th Army Corps , Dept . Tennessee , to July , 1863 . 2nd Brigade , 1st Division , 13th Army Corps , Dept . Tennessee , to August , 1863 , and Dept . of the Gulf to March , 1864 . 1st Brigade , 1st Division , 13th Army Corps , Dept . Gulf , to June , 1864 . 1st Brigade , 3rd Division , 19th Army Corps , Dept . Gulf , to August , 1864 . 4th Brigade , 2nd Division , 19th Corps , Dept . Gulf , to December , 1864 , 4th Brigade , Reserve Corps , Military Division West Mississippi , to February , 1865 . 1st Brigade , 2nd Division , Reserve Corps , Middle Division West Mississippi , February , 1865 . 1st Brigade , 2nd Division , 13th Army Corps , Military Division West Mississippi , to July , 1865 . SERVICE . - - Duty at St . Louis , Camp Patterson and West Plains , Mo . , until February , 1863 . March via Thomasville and Eminence to Iron Mountain , Mo . , February 9 – 26 , and duty there until March 9 . Moved to St . Genevieve March 9 – 12 , thence to Milliken ' s Bend , La . , March 22 – 27 , and duty there until April 25 . Movement on Bruinsburg and turning Grand Gulf April 25 – 30 . Anderson ' s Hill April 30 . Battle of Port Gibson May 1 . Bayou Pierrie May 2 – 3 . Battle of Champion ' s Hill May 16 . Big Black River May 17 . ( A detachment of Regiment guard prisoners to Memphis , Tenn . , May 18 - June 10 , and while en route to rejoin Brigade at Vicksburg , reinforced garrison at Milliken ' s Bend , La . , June 5 , and participated in repulse of McCullough ' s attack on Milliken ' s Bend June 6 – 7 . ) Siege of Vicksburg May 18 - July 4 . Advance on Jackson July 5 – 10 . Siege of Jackson July 10 – 17 . Ordered to the Dept . of the Gulf August 13 . Duty at Carrollton , Brashear City and Berwick until October 3 . Western Louisiana Campaign October 3 - November 17 . Expedition to New Iberia October 3 – 7 , and to Vermillion Bayou October 8 – 30 . Moved to Brazos Santiago , Texas , November 17 – 23 . Fort Esperanza November 27 – 30 . Duty at Indianola until March , 1864 , and at Matagorda Island until May 4 . Moved to New Orleans , La . , thence to Join Banks on Red River , May 4 – 15 . Joined at Simsport and retreat to Morganza May 16 – 22 . Duty at Morganza until October . Simsport October 6 . Moved to Duvall ' s Bluff October 12 , and duty there and in Arkansas until January , 1865 . Ordered to New Orleans , La . , thence to Barrancas , Fla . , February 17 . Campaign against Mobile and its defenses March and April . Steele ' s march from Pensacola , Fla . , to Blakely , Ala . , March 21 - April 2 . Occupation of Canoe Station March 27 . Siege of Fort Blakely April 2 – 9 . Assault and capture of Fort Blakely April 9 . Occupation of Mobile April 12 , and duty there until June . At Columbus until July . Mustered out July 26 , 1865 . Total strength and casualties . A total of 1070 men served in the 23rd Iowa at one time or another during its existence . It suffered 6 officers and 69 enlisted men who were killed in action or who died of their wounds and 1 officer and 208 enlisted men who died of disease , for a total of 284 fatalities .