20th Iowa Infantry Regiment

The 20th Iowa Infantry was organized at Clinton, Iowa{{sfnp|CWA, 20th Iowa Infantry Regiment|2016}}{{sfnp|NPS 20th Regiment, Iowa Infantry|2007}} and mustered in for three years of Federal service on August 25, 1862.{{sfnmp|1a1=Dyer|1y=1908|1p=1173|2a1=Federal Publishing Company|2y=1908|2p=157}} The 20th Infantry moved to St. Louis, Mo., September 5; thence to Springfield, Mo., arriving September 24. They were attached to the following units over the course of their service:

• 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.{{NoteTag|On this expedition, Maj. Gen. Dana commanded both XIII Corps and its 2nd Division.}}
• 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.

The 20th took part in the following movements, actions, and engagements:

• 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.
• Siege of Vicksburg June 14-July 4.
• Expedition to Yazoo City July 12–22.
• 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 Bay August 2–7.
• Siege of Fort Morgan August 9–23. Capture of Fort Morgan September 23.{{sfnp|HMDB, The Battery Lincoln: Position of Company "C"|2015}}
• 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.

The regiment was mustered out on July 8, 1865.{{sfnp|Dyer|1908|p=1173}}

The 20th Iowa mustered 1026 men at one time or another during its existence.{{sfnp|Thrift|1910|p=348}}

It suffered 1 officer and 13 enlisted men who were killed in action or who died of their wounds and 2 officers and 157 enlisted men who died of disease, for a total of 173 fatalities.{{sfnmp|1a1=Dyer|1y=1908|1p=1173|2a1=Federal Publishing Company|2y=1908|2p=158}} 52 were wounded.

• Colonel William McEntyre Dye{{sfnp|Thrift|1910|p=349}}
• Brevet Colonel Joseph Bloomfield Leake{{sfnp|Thrift|1910|p=349}}

• List of Iowa Civil War Units
• Iowa in the American Civil War

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• {{cite book |last=Dyer |first=Frederick Henry |author-link=Frederick H. Dyer |title=A Compendium of the War of the Rebellion |publisher=Dyer Pub. Co. |location=Des Moines, IA |date=1908 |oclc=8697590 |lccn=09005239 |asin=B01BUFJ76Q |url=https://hdl.handle.net/2027/mdp.39015026937642?urlappend=%3Bseq=1185%3Bownerid=13510798899657173-1211 |language=en |format=PDF |pages=1173 |hdl=2027/mdp.39015026937642?urlappend=%3Bseq=1185 |url-access=registration |access-date=October 20, 2024}}{{PD-notice}}
• {{cite book |author=Federal Publishing Company |title=Military Affairs and Regimental Histories of Wisconsin, Minnesota, Iowa, Kansas, Missouri, Kentucky, Tennessee, California, Oregon, The Territories and District of Columbia |publisher=Federal Publishing Company |series=The Union Army: A History of Military Affairs in the Loyal States, 1861–65 – Records of the Regiments in the Union army – Cyclopedia of battles – Memoirs of Commanders and Soldiers. |volume=IV |date=1908 |location=Madison, WI |url=https://hdl.handle.net/2027/wu.89059483164?urlappend=%3Bseq=159%3Bownerid=13510798900206060-163 |access-date=July 11, 2024 |oclc=1086145633 |format=PDF |pages=157–158|hdl=2027/wu.89059483164?urlappend=%3Bseq=159 }}{{PD-notice}}
• {{cite book |last1=Thrift |first1=William H. |title=17th-31st Regiments, Infantry |series=Roster and Record of Iowa Soldiers in the War of the Rebellion |volume=III |url=https://hdl.handle.net/2027/miun.aby1249.0003.001?urlappend=%3Bseq=253 |publisher=Iowa Adjutant General's Office |location=Des Moines, IA |date=1910 |pages=339–438 |hdl=2027/miun.aby1249.0003.001?urlappend=%3Bseq=253 |oclc=2222361 |lccn=08028844 |language=en |format=pdf |access-date=8 December 2020 }}{{PD-notice}}
• {{Cite web |date=2016 |title=20th Iowa Infantry Regiment |url=http://www.civilwararchive.com/Unreghst/uniainf2.htm#20thinf |access-date=December 17, 2020 |website=The Civil War Archive |ref={{sfnref|CWA, 20th Iowa Infantry Regiment|2016}} }}
• {{cite web|title=The Battery Lincoln: Position of Company "C" of the 20th Iowa Infantry|url=http://www.hmdb.org/marker.asp?marker=81809|website=Historical Marker Database|accessdate=25 September 2015|ref={{sfnref|HMDB, The Battery Lincoln: Position of Company "C"|2015}} }}
• {{cite web |url=https://www.nps.gov/civilwar/search-battle-units-detail.htm?battleUnitCode=UIA0020RI |title=Battle Unit Details, 20th Regiment, Iowa Infantry |website=nps.gov |date=January 19, 2007 |publisher=U.S. National Park Service |access-date=May 13, 2024 |ref={{sfnref|NPS 20th Regiment, Iowa Infantry|2007}} }}{{PD-notice}}

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Category:Units and formations of the Union army from Iowa

Category:Military units and formations established in 1862

Category:1862 establishments in Iowa

Category:Military units and formations disestablished in 1865