Missouri Civil War Union Infantry Units

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

Units 1st through 2nd

• 1st Rifle Battalion, Missouri Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• 1st Regiment, Missouri Infantry (3 months 1861) (Union)
  Organized at St. Louis, Missouri, for three months April 22, 1861.
  Designation of Regiment changed to 1st Missouri Light Artillery September 1, 1861.
  

• 1st Regiment, Enrolled Militia, Missouri National Guard Infantry (Union)
  Called into service September 25, 1864, to repel Price's invasion of Missouri. Relieved from active service October 31, 1864. Action at Middle or Mill Creek Bridge July 24, 1864.
  

• 1st Regiment, US Reserve Corps, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, September 3, 1861.
  Mustered out October 6, 1862.
  

• 1st Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union)
  Organized for three months at St. Louis, Mo., May 7, 1861.
  Mustered out August 20, 1861.
  

• 1st Regiment, Missouri State Militia Infantry (Union)
  Organized at St. Louis, Missouri, May 13, 1862, by consolidation of various companies State Militia Infantry raised at St. Louis, Missouri. Served as prison guard and Provost guard at St. Louis until September 28, 1862.
  

• 1st Regiment Volunteer Missouri Infantry (Union)
  Organized between 1 December 1861 and 21 March 1862
  Mustered out between 21 December 1862 and 10 May 1862
  Discharged between 29 December 1864 and 9 May 1865

• 2nd Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, September 10, 1861.
  

• 2nd Regiment, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Missouri, April 22, 1861.
  Mustered out August 31, 1861.
  

• 2nd Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union)
  Reorganized at St. Louis August 23 to September 20, 1861.
  

• 2nd Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Missouri, May 7, 1861.
  Mustered out August 16, 1861.
  

• 2nd Regiment Volunteer Missouri Infantry (Union)
  Organized between 24 June 1861 and 9 September 1861
  Mustered out between 10 September 1861
  Discharged between 26 September 1864 and 29 September 1864

Units 3rd through 4th

• 3rd Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, September 3, 1861, to January 18, 1862. At various locations, then with 3rd Brigade, 1st Division, 15th Army Corps, to November, 1864.
  

• 3rd Regiment, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Missouri, April 22, 1861.
  Mustered out September 4, 1861.
  

• 3rd Regiment, US Reserve Corps, Missouri Infantry (Union)
  Organized at St. Louis. Missouri, August and September, 1861.
  Consolidated with Gasconade Battalion to form 4th Missouri Infantry January 18, 1862.
  

• 3rd Regiment, US Reserve Corps, Missouri Infantry (3 months 1861) (Union)
  Organized at Turner Hall, St. Louis, Missouri, May 8, 1861.
  Mustered out August 18, 1861.
  

• 3rd Provisional Regiment, Enrolled Missouri Militia (Union)
  Organized between 14 April 1863 and 20 May 1863.
  Mustered out between 14 April 1863 and 20 May 1863.
  Discharged between 12 September 1863 and 9 December 1863.

• 3rd Regiment Volunteer Missouri Infantry (Union)
  Organized between 27 July 1861 and 25 October 1861
  Mustered out between 3 September 1861 and 31 December 1861
  Discharged between 3 September 1864 and 16 November 1864

• 4th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, by consolidation of Gasconade Battalion and 3rd Regiment United States Reserve Corps January, 1862.
  Mustered out February 1, 1863.

• 4th Regiment, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Missouri, April 22, 1861.
  Mustered out July 30, 1861.
  

• 4th Regiment, US Reserve Corps, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, September, 1861.
  Mustered out January 13, 1862.
  

• 4th Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Missouri, May 8, 1861.
  Mustered out August 18, 1861.
  

Units 5th through 11th

• 5th Regiment, Missouri Infantry (Union)
  Organized at St. Louis March 18, 1862, by consolidation of 5th United States Reserve Corps, Voerster's Company Sappers and Miners, Giester's Company Pioneers and Winkelman's Company Pontooneers.
  Companies "A" and "I" transferred to 25th Missouri Infantry, and Companies "H" and "K" to 27th Missouri Infantry. Companies "B," "C," "D," "E," "F" and "G" mustered out November 22, 1862.
  

• 5th Regiment, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Mo., May 18, 1861.
  Mustered out August 27, 1861.
  

• 5th Regiment, US Reserve Corps, Missouri Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• 5th Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union)
  Organized at St. Louis, Mo., May 11, 1861.
  Mustered out August 31, 1861.
  

• 6th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Mo., June 15-July 9, 1861.
  

• 7th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Mo., June, 1861.
  

• 8th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Mo., June 12 to August 14, 1861.
  

• 9th Regiment, Missouri Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• 10th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, August, 1861. Served at various locations to December, 1863. With the 2nd Brigade, 3rd Division, 15th Army Corps, to October, 1864.

• 11th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Missouri, August, 1861. Served at various locations to August, 1865. In the District of Alabama to December, 1865.

• 11th Regiment, Volunteer Missouri Infantry (Union) The 11th Regiment, Volunteer Missouri Infantry was enrolled between July 7 1861 and July 30 1861.

They were ordered into service between August 3 1861 and August 16 1861. The Regiment was discharged on January 15 1866.

Units 12th through 22nd

• 12th Regiment, Missouri Infantry Union Missouri
  Organized at St. Louis, Missouri, August, 1861. Served with various units to December, 1863. With the 3rd Brigade, 1st Division, 15th Army Corps, to November, 1864.
  

• 12th Regiment, Volunteer Missouri Infantry (Union)
  Organized between 7 August 1861 and 1 September 1861. Mustered out between 13 August 1861 and 19 December 1861.
  Discharged on 12 August 1864 thru 19 December 1864.

• 13th Regiment, Missouri Infantry Union Missouri
  Organized at St. Louis, Missouri, September, 1864, to February, 1865, from Veterans of Missouri State Militia Regiments. Attached to District of Rolla and Dept. of Missouri to July, 1866.
  

• 13th Regiment, Volunteer Missouri Infantry (Union)
  Organized between June 17 1861 and August 24 1861.
  Mustered out between 120 June 1861 and 28 August 1861.
  Discharged on 26 October 1861.

• 14th Regiment, Volunteer Missouri Infantry (Union)
  Organized between August 20 1861 and November 9 1861.
  Mustered out between August 20 1861 and November 9 1861.
  Discharged between August 27 1864 and July 7 1865.

• 15th Regiment, Missouri Infantry Union Missouri
  Organized at St. Louis, Missouri, August and September, 1861. Served with various units to August, 1865. Then with the Department of Texas to December, 1865.

• 16th Regiment, Missouri Infantry (Union)
  Failed to complete organization.

• 17th Regiment, Missouri Infantry Union Missouri
  Organized at St. Louis, Missouri, August, 1861. Served with various units to December, 1863. With the 3rd Brigade, 1st Division, 15th Army Corps, to December, 1864.

• 18th Regiment, Missouri Infantry Union Missouri
  Organized at Laclede, Missouri, July to November, 1861. Served with various units to September, 1864. With the 1st Brigade, 1st Division, 17th Army Corps, to July, 1865.

• 19th Regiment, Missouri Infantry (Union)
  Failed to complete organization.

• 20th Regiment, Missouri Infantry (Union)
  Failed to complete organization.

• 21st Regiment, Missouri Infantry (Union)
  Organized February 1, 1862, from 1st and 2nd Northeast Regiments Missouri Infantry.
  Served with various units to August, 1865. Then with the Department of Alabama to April, 1866.

• 21st Regiment, Volunteer Missouri Infantry (Union) 21st Regiment, Volunteer Missouri Infantry was enrolled between 12 July 1861 and 13 November 1861. They were ordered into service between 16 September 1861 and 1 February 1862. The Regiment was discharged between 3 February 1863 and 19 April 1866.

• 22nd Regiment, Missouri Infantry (Union)
  Organized in Missouri at large August to December, 1861.
  Served unassigned, Dept. of Missouri, to March, 1862. Unassigned, Army of Mississippi, to July, 1862.
  

Units 23rd through 32nd

• 23rd Regiment, Missouri Infantry (Union)
  Organized in Missouri at large September, 1861.
  Served with various units to July, 1864. With the 1st Brigade, 3rd Division, 14th Army Corps, to July, 1865.
  

• 23rd Regiment, Volunteer Missouri Infantry (Union)
  Organized between 3 August 1861 and 12 December 1861.
  Mustered out between 16 September 1861 and 25 January 1862.
  Discharged between 20 September 1864 and 18 July 1865.

• 24th Regiment, Volunteer Missouri Infantry (Union)
  Organized between 2 August 1861 and 23 November 1861.
  Mustered out between 11 October 1861 and 30 November 1861.
  Discharged between 7 October 1864 and 17 October 1864.

• 24th Regiment, Missouri Infantry (Union)
  Organized in Missouri at large October 24 to December 28, 1861.
  Served with various units to June 1864. Then with the Department of the Tennessee to October, 1864.
  

• 25th Regiment, Missouri Infantry (Union)
  Organized as 13th Missouri Infantry June, 1861. Designation changed to 25th Missouri September, 1861.
  Served with various units to June, 1863. With 6th Division, 16th Army Corps, Department of the Tennessee, to February, 1864.
  

• 25th Regiment, Enrolled Missouri Militia (Union)
  Organized between 27 July 1862 and 22 August 1862.
  Discharged between 8 November 1862 and 30 April 1863.

• 25th Regiment, Volunteer Missouri Infantry (Union)
  Organized between July 12 1861 and December 21 1861.
  Mustered out between July 13 1861 and December 21 1861.

• 26th Regiment, Volunteer Missouri Infantry (Union)
  Organized between 20 August 1861 and 20 November 1861.
  Mustered out between 31 August 1861 and 10 January 1862.
  Discharged between 13 December 1864 and 26 December 1865.

• 26th Regiment, Missouri Infantry (Union)
  Organized in Missouri at large September to December, 1861.
  Served with various units to April, 1865. With the 3rd Brigade, 2nd Division, 15th Army Corps, to August, 1865.
  

• 26th Regiment, Enrolled Missouri Militia (Union)
  Organized between 31 July 1862 and 5 April 1863.
  Discharged between 4 February 1863 and 30 April 1863.
  Re-enrolled between 20 September 1864 and 1 October 1864.
  Discharged again between 18 and 19 November 1864.

• 27th Regiment, Volunteer Missouri Infantry (Union)
  Organized between 12 August 1861 and 25 September 1862.
  Mustered out between 9 September 1861 and 7 January 1863.
  Discharged between 10 June 1865 and 18 July 1865.

• 27th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Mo., September 2, 1862, to January 8, 1863.
  Attached to District of Rolla, Department of Missouri, to March, 1863. With the 1st Brigade, 1st Division, 15th Army Corps, Army of the Tennessee, to June, 1865.
  

• 27th Regiment, Missouri Mounted Infantry (Union)
  Organized in Missouri at large May to November, 1861. Companies "G," "H" and "I" organized for three months.
  Mustered out January 27 to February 28, 1862.
  

• 27th Regiment, Enrolled Missouri Militia (Union)
  Organized between 5 August 1862 and 30 May 1864.
  Mustered out between 5 August 1862 and 20 November 1864.
  Discharged between 22 November 1862 and 24 December 1864.
  Mustered out again between 12 October 1864 and 1 November 1864.
  Discharged again between 20 November 1864 and 20 January 1865.

• 28th Regiment, Enrolled Missouri Militia (Union)
  Organized between 30 July 1862 and 7 September 1862.
  Mustered out between 9 August 1862 and 27 September 1862.
  Discharged between 12 October 1862 and 20 October 1863.
  Mustered out again between 1 May 1863 and 27 September 1864.
  Discharged again between 20 May 1863 and 24 November 1864.
  Mustered out again on 27 September 1864.
  Final discharge on 9 November 1864.

• 28th Regiment, Volunteer Missouri Infantry (Union)
  Organized in the Summer of 1862.

• 29th Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, and St. Louis, Missouri, July to October, 1862.
  Served with various units to November, 1864. Unattached, 15th Army Corps, to June, 1865.
  

• 29th Regiment, Enrolled Missouri Militia (Union)
  Organized between 18 August 1862 and 9 September 1862.
  Mustered out between 18 August 1862 and 29 September 1864.
  Discharged between 7 November 1862 and 28 November 1864.
  Mustered out again on 29 September 1864.
  Discharged again on 28 November 1864.

• 30th Regiment, Missouri Infantry Union Missouri
  Organized at St. Louis, Missouri, September and October, 1862. With various units to July, 1865. With Department of Texas to August, 1865.
  

• 30th Regiment, Enrolled Missouri Militia (Union)
  Organized between 8 July 1862 and 21 August 1862.
  Mustered out between 8 July 1862 and 29 September 1864.
  Discharged between 3 April 1863 and 28 November 1864.
  Mustered out again between 19 July 1864 and 28 July 1864.
  Discharged again between 31 October 1864 and 8 November 1864.

• 31st Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Carondelet and Ironton, Missouri, August 11 to October 7, 1862.
  Served with various units to September, 1864. With the 1st Brigade, 1st Division, to November, 1864.
  

• 31st Regiment, Enrolled Missouri Militia (Union)
  Organized between 18 March 1862 and 10 September 1863.
  Mustered out between 7 August 1862 and 20 July 1864.
  Discharged between 4 October 1862 and 30 November 1864.
  Mustered out again between 10 October 1863 and 13 October 1864.
  Discharged again between 6 November 1862 and 30 November 1864.
  Mustered out again between 20 July 1864 and 4 October 1864.
  Discharged again between 30 August 1864

• 32nd Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, October 18-December 8, 1862.
  Served with various units to September, 1864. With the 1st Brigade, 1st Division, 15th Army Corps, to July, 1865.
  

• 32nd Regiment, Missouri Infantry (New) (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• 32nd Regiment, Enrolled Missouri Militia (Union)
  Organized between 27 July 1862 and 9 September 1862.
  Mustered out between 29 July 1862 and 10 September 1862.
  Discharged discharged on 9 May 1863.

Units 33rd through 40th

• 33rd Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, August 29-September 5, 1862.
  Served with various units to February, 1865. With the 3rd Brigade, 1st Division, 16th Army Corps (New), Military Division West Mississippi, to August, 1865.
  

• 34th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 35th Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, December 3, 1862.
  Served with various units to February, 1865. With the 1st Brigade, 1st Division, 7th Army Corps, to June, 1865.
  

• 36th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 37th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 38th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 39th Regiment, Missouri Infantry (Union)
  Organized at Hannibal, Missouri, August 18 to September 30, 1864.
  Served with various units to January, 1865. With the District of St. Louis, Missouri, to July, 1865.
  

• 40th Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, August 11 to September 8, 1864.
  Served with various units to March, 1865. With the 2nd Brigade, 3rd Division, 16th Army Corps, to August, 1865.
  

Units 41st thru 49th

• 41st Regiment, Missouri Infantry (Union)
  Organized at Benton Barracks, Missouri, August and September, 1864. Mustered in September 16, 1864.
  Mustered out July 11, 1865.
  

• 42nd Regiment, Missouri Infantry (Union)
  Organized at Macon, Missouri, September, 1864.
  Served with various units to April, 1865. With the 2nd Brigade, 1st Sub-District, District of Middle Tennessee, to June, 1865.
  

• 43rd Regiment, Missouri Infantry (Union)
  Organized at St. Joseph, Missouri, August 22 to September 7, 1864.
  Attached to District of Northern Missouri, Dept. of Missouri, to April, 1865. District of Central Missouri, to June, 1865.
  

• 44th Regiment, Missouri Infantry (Union)
  Organized at St. Joseph, Missouri, August 22-September 7, 1864.
  Served with various units to February, 1865. With the 1st Brigade, 3rd Division, 16th Army Corps (New), Military Division West Mississippi, to August, 1865.
  

• 45th Regiment, Missouri Infantry (Union)
  Organized at Sedalia, Warrensburg and Otterville August 10 to September 17, 1864.
  Attached to District of St. Louis, Missouri, Dept. of Missouri, to December, 1864. Unattached, 4th Division, 23rd Army Corps, Army Ohio, to March, 1865.
  

• 46th Regiment, Missouri Infantry (Union)
  Organized at Springfield, Missouri, August to November, 1864, for six months. Attached to District of Southwest Missouri, Department of Missouri, to March, 1865. With the 2nd Brigade, 1st Sub-District, District of Middle Tennessee, Department of the Cumberland, to May, 1865.
  

• 47th Regiment, Missouri Infantry (Union)
  Organized at Pilot Knob, Missouri, August 22 to September 11, 1864.
  Served with various units to December, 1864. With the Department Cumberland, to March, 1865.
  

• 48th Regiment, Missouri Infantry (Union)
  Organized at St. Louis, Jefferson City and Rolla, Missouri, August 3-November 22, 1864.
  Served with various units to February, 1865. At Camp Douglas, Chicago, Illinois, to June, 1865.
  

• 49th Regiment, Missouri Infantry (Union)
  Organized at Warrenton, Mexico, Macon and St. Louis, Missouri, August 31, 1864, to February 5, 1865.
  Served with various units to August, 1865. Department of Alabama to December, 1865.
  

Units 50th through 63rd

• 50th Regiment, Missouri Infantry (Union)
  Organized in Missouri at large September 11, 1864, to April 27, 1865.
  Mustered out July 1 to August 11, 1865.

• 51st Regiment, Missouri Infantry (Union)
  Organized at St. Joseph, Mo., March 1 to April 14, 1865. Stationed at St. Louis, and in the Dept. of Missouri. Mustered out August 31, 1865.
  

• 52nd Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 54th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 56th Regiment, Missouri Infantry (Union)
  Failed to complete organization.
  

• 63rd Regiment, Enrolled Militia, Missouri Infantry (60 days 1864) Union Missouri
  Duty in 7th Military District, North Missouri
  

Units A through Z

• Benton Cadets, Missouri Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.

• Cook's Company, Missouri Home Guard Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• Dietrich's Company, US Reserve Corps, Missouri Infantry (Union)
  Organized at Manchester, Mo., August 15, 1861. Guard and patrol duty in Missouri till February, 1862. Mustered out February 3, 1862.
  

• King's Company, Railroad Patrol Guard, US Reserve Corps, Missouri Infantry (Union)
  Organized at Franklin September and October, 1861. Duty guarding railroad till January, 1862. Mustered out January 23, 1862.
  

• Krekel's Battalion, US Reserve Corps, Missouri Infantry (Union)
  "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.
  

• Phelps' Regiment, Missouri Infantry (6 months, 1861) (Union)
  Organized at Rolla, Mo., September 22 to December 27, 1861. Served unattached, Army of Southwest Missouri, to February, 1862. 2nd Brigade, 4th Division, Army of Southwest Missouri, to May, 1862.
  

• Van Horn's Battalion, US Reserve Corps, Missouri Infantry (Union)
  Organized at St. Louis, Missouri,May 1, 1861, and mustered into service at Kansas City, Missouri, May 24.
  At siege of Lexington, Missouri, September 11-21. Surrendered to Price September 21, 1861.
  Mostly mustered out October 29, 1861.
  Balance transferred to 25th Missouri Infantry December, 1861.