20th Iowa Infantry

== Regimental History and Service Record ==
Organized at Clinton and mustered in August 25, 1862. Moved to St. Louis, Mo., September 5; thence to Springfield, Mo., arriving September 24. Attached to 2nd Brigade, 2nd Division, Army of the Frontier, Dept. of Missouri, to June, 1863. 1st Brigade, Herron's Division, 13th Army Corps, Dept. of Tennessee, to July, 1863. 1st Brigade, 2nd Division, 13th Army Corps, Dept. of Tennessee, to August, 1863, and Dept. of the Gulf to October, 1863. 2nd Brigade, 2nd Division, 13th Corps, Dept. of the Gulf, to January, 1864. 2nd Brigade, 4th Division, 13th Corps, to February, 1864. 2nd Brigade, 2nd Division, 13th Corps, to June, 1864. 1st Brigade, United States Forces, Texas, Dept. of the Gulf, to August, 1864. United States Forces, Mobile Bay, Dept. of the Gulf, to September, 1864. 1st Brigade, 3rd Division, 19th Corps, Dept. of the Gulf, to December, 1864. 4th Brigade, Reserve Corps, Military Division West Mississippi, to February, 1865. 3rd Brigade, 2nd Division, Reserve Corps, February, 1865. 3rd Brigade, 2nd Division, 13th Army Corps, Military Division West Mississippi, to July, 1865.
SERVICE.--Schofield's Campaign in Southwest Missouri October, 1862, to January, 1863. Occupation of Newtonia October 4. Battle of Prairie Grove, Ark., December 7. March over Boston Mountains to Van Buren, Ark., December 27-31. March to Huntsville, Ark., January 2-18, 1863, to Elk Creek January 22-February 15, and to St. Louis, arriving April 24. Guard Arsenal until May 15. (Cos. "A" and "F" at Defense of Cape Girardeau.) At Pilot Knob until June 3. Moved to St. Genevieve June 3, and to Vicksburg, Miss., June 6-14. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
** July 12-21, 1863 - Expedition from Vicksburg, Mississippi to Yazoo City, Mississippi
Capture of Yazoo City July 14. Moved to Port Hudson July 24 and to Carrollton, La., August 16. Expedition to Morganza, September 5-12. Atchafalaya River September 9-10. Sterlings Plantation September 29. At Morganza until October 10, then moved to Carrollton. Expedition to Rio Grande, Texas, October 27-December 2. Brazos, Santiago, November 4. Point Isabel November 6, Duty at Brownsville, Point Isabel and Mustang Island until June 24, 1864. Moved to Brazos Santiago, thence to Brownsville, and duty there until August 2. Moved to New Orleans, thence to Mobile May August 2-7. Siege of Fort Morgan August 9-23. Capture of Fort Morgan September 23. Moved to Morganza September 7-12, thence to Duvet's Bluff, Ark., October 12, and duty there and at Brownsville until January, 1865. Moved to New Orleans January 28, 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 20-April 2. Occupation of Canoe Station March 27. Siege of Fort Blakely April 2-9. Assault and capture of Fort Blakely April 9. Moved to Mobile April 14, and duty there until July. Mustered out July 8, 1865.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Regimental Band
 
 
 Company A
 
 
 Company B
 
 
 Company C
 
 
 Company D
 
 
 Company E
 
 
 Company F
 
 
 Company G
 
 
 Company H
 
 
 Company I
 
 
 Company K
 
 
 Unassigned
 
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== Regiment Statistical Information ==
* Regiment lost during service 1 Officer and 13 Enlisted men killed and mortally wounded and 2 Officers and 157 Enlisted men by disease. Total 173.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 779, 782, 1173)
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