Iowa Civil War Union Infantry Units

The information in this list of Iowa Military Units comes from the Civil War Soldiers and Sailors web site (CWSS). This web site can also be searched by the name of a soldier.

Units 1st through 9th

 * 1st Regiment, Iowa Infantry (3 months, 1861) Organized at Keokuk for three months and mustered in May 14, 1861. Mustered out August 20, 1861.


 * 2nd Regiment, Iowa Infantry Organized at Keokuk and mustered in May 27, 1861. Mustered out July 12 and discharged at Davenport, Iowa, July 20, 1865.


 * 3rd Regiment, Iowa Infantry Organized at Keokuk and mustered in June 8, 1861. Veterans consolidated to a Battalion of three Companies July, 1864. Transferred to 2nd Iowa Infantry as Companies "A," "F" and "I," November 4, 1864.


 * 4th Regiment, Iowa Infantry Organized at Council Bluffs and mustered in August 8, 1861.


 * 5th Regiment, Iowa Infantry Organized at Burlington July 15, 1861. Mustered out July 30. Consolidated with 5th Iowa Cavalry August 8, 1864.


 * 6th Regiment, Iowa Infantry Organized at Burlington and mustered in July 17, 1861. Mustered out July 21, 1865.


 * 7th Regiment, Iowa Infantry Organized at Burlington July 24 to August 4, 1861. Mustered out July 12, 1865.


 * 8th Regiment, Iowa Infantry Organized at Davenport August and September, 1861. Mustered out April 20, 1866.


 * 9th Regiment, Iowa Infantry Organized at Dubuque and mustered in September 24, 1861. Mustered out July 18, 1865.

Units 10th through 19th

 * 10th Regiment, Iowa Infantry Organized at Iowa City and Montezuma August and September, 1861. Mustered out August 15, 1865.


 * 11th Regiment, Iowa Infantry Organized at Davenport September 28 to October 18. 1861. Mustered out July 15, 1865.


 * 12th Regiment, Iowa Infantry Organized at Dubuque and mustered in November 25, 1861. Mustered out January 20, 1866.


 * 13th Regiment, Iowa Infantry Organized at Davenport October 18 to November 2, 1861. Mustered out July 21, 1865.


 * 14th Regiment, Iowa Infantry Organized at Davenport November and mustered in November 6, 1861. Mustered out August 8, 1865.


 * 15th Regiment, Iowa Infantry Organized at Keokuk February 22, 1862. Mustered out July 24, 1865.


 * 16th Regiment, Iowa Infantry Organized at Davenport December 10, 1861, to March, 1862. Mustered out July 19, 1865.


 * 17th Regiment, Iowa Infantry Organized at Keokuk March 21 to April 16, 1862, and mustered in April 16, 1862. Mustered out July 25, 1865.


 * 18th Regiment, Iowa Infantry Organized at Clinton and mustered in August 6, 1862. Ordered to Little Rock. Mustered out July 20, 1865.


 * 19th Regiment, Iowa Infantry Organized at Keokuk and mustered in August 25, 1862. Mustered out July 10, 1865.

Units 20th through 30th

 * 20th Regiment, Iowa Infantry Organized at Clinton and mustered in August 25, 1862. Mustered out July 8, 1865.


 * 21st Regiment, Iowa Infantry Organized at Dubuque August, 1862. Mustered out July 25, 1865.


 * 22nd Regiment, Iowa Infantry Organized at Iowa City and mustered in September 9, 1862. Mustered out July 25, 1865.


 * 23rd Regiment, Iowa Infantry Organized at Des Moines and mustered in September 19, 1862. Mustered out July 26, 1865.


 * 24th Regiment, Iowa Infantry Organized at Muscatine and mustered in September 18, 1862. Mustered out at Savannah, Ga., July 17, 1865.


 * 25th Regiment, Iowa Infantry Organized at Mount Pleasant and mustered in September 27, 1862. Mustered out June 6, 1865.


 * 26th Regiment, Iowa Infantry Organized at Clinton and mustered in September 30, 1862. Mustered out June 6, 1865.


 * 27th Regiment, Iowa Infantry Organized at Dubuque and mustered in October 3, 1862. Mustered out August 8, 1865.


 * 28th Regiment, Iowa Infantry Organized at Iowa City and mustered in October 10, 1862. Mustered out July 31, 1865.


 * 29th Regiment, Iowa Infantry Organized at Camp Dodge, Council Bluffs, and mustered in December 1, 1862. Moved to New Orleans, La.; thence home. Mustered out August 10, 1865.


 * 30th Regiment, Iowa Infantry Organized at Keokuk and mustered in September 20, 1862. Mustered out June 5, 1865.

Units 31st through 39th

 * 31st Regiment, Iowa Infantry Organized at Davenport and mustered in October 13, 1862. Mustered out June 27, 1865.


 * 32nd Regiment, Iowa Infantry Organized at Dubuque and mustered in October 6, 1862. Mustered out August 24, 1865.


 * 33rd Regiment, Iowa Infantry Organized at Oskaloosa and mustered in October 4, 1862. Mustered out July 17, 1865, and discharged at Rock Island, Ill., August 7, 1865.


 * 34th Regiment, Iowa Infantry Organized at Burlington and mustered in October 15, 1862. Mustered out August 15, 1865.


 * 35th Regiment, Iowa Infantry Organized at Muscatine and mustered in September 18, 1862. Mustered out August 10, 1865.


 * 36th Regiment, Iowa Infantry Organized at Keokuk and mustered in October 4, 1862. Mustered out August 24, 1865.


 * 37th Regiment, Iowa Infantry Organized at Muscatine and mustered in December 15, 1862. Mustered out May 24, 1865.


 * 38th Regiment, Iowa Infantry Organized at Dubuque and mustered in December 4, 1862. Consolidated with 34th Iowa Infantry December 12, 1864.


 * 39th Regiment, Iowa Infantry Organized at Des Moines and Davenport and mustered in November 24, 1862. Mustered out August 2, 1865.

Units 40th through 48th

 * 40th Regiment, Iowa Infantry Organized at Iowa City and mustered in November 15, 1862. Mustered out June 5, 1865.


 * 41st Battalion, Iowa Infantry Originally organized at Companies "A," "B," "C," 14th Iowa Infantry, October, 1861. Detached by order of General Fremont, and march from Davenport, via Des Moines, Council Bluffs and Sioux City, to Fort Randall, Dakota Territory, arriving December 5, 1861, and on special duty at that point till April, 1863. Permanently detached from 14th Iowa Infantry September 18, 1862, and designated 41st Iowa Battalion Infantry. Transferred to 7th Iowa Cavalry as Companies "K," "L" and "M."


 * 42nd Regiment, Iowa Infantry Failed to complete organization.


 * 43rd Regiment, Iowa Infantry Failed to complete organization.


 * 44th Regiment, Iowa Infantry (100 days, 1864) Organized at Davenport June 1, 1864. Mustered out September 15, 1864.


 * 45th Regiment, Iowa Infantry (100 days, 1864) Organized at Keokuk May 25, 1864. Moved to St. Louis, Mo., thence to Memphis and Moscow, Tenn., and assigned to duty guarding Memphis &amp; Charleston Railroad till September, 1864. Mustered out September 16, 1864.


 * 46th Regiment, Iowa Infantry (100 days, 1864) Organized at Davenport June 10, 1864. Mustered out September 23, 1864.


 * 47th Regiment, Iowa Infantry (100 days, 1864) Organized at Davenport July 13, 1864. Ordered to Helena, Ark., and duty there and in District of Eastern Arkansas, 7th Army Corps, Dept. of Arkansas, to September. Ordered to Davenport, Iowa, September 1. Mustered out September 28, 1864.


 * 48th Regiment, Iowa Infantry (100 days, 1864) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.