Missouri Civil War Union Infantry Units

United States     U.S. Military      Missouri      Missouri Military      Missouri in the Civil War      Missouri Civil War Union Infantry Units

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.

-1st Units

 * 1st Rifle Battalion, Missouri Infantry "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, Mo., for three months April 22, 1861. Attached to 3rd Brigade, Lyon's Army of the West.


 * 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, Mo., September 3, 1861. Attached to the Division, Army of the West, to February, 1862. District of Rolla and District of St. Louis, Mo., Dept. of Missouri, to October, 1862. Campaign in Missouri September, 1861, to February, 1862. Duty guarding railroad beyond Rolla and in Southwest Missouri February to October, 1862. 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. Moved to St. Louis, Mo., August 13-14. Mustered out August 20, 1861.


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

-2nd Units

 * 2nd Regiment, Missouri Infantry (Union) Organized at St. Louis, Mo., September 10, 1861. At various locations, then attached to 1st Brigade, 2nd Division, 4th Army Corps, to October, 1864.


 * 2nd Regiment, Missouri Infantry (3 months, 1861) (Union) Organized at St. Louis, Mo., April 22, 1861. Attached to 3rd Brigade, Lyon's Army of the West. Capture of Camp Jackson, St. Louis, Mo., May 10. Capture of Jefferson City June 14. Booneville June 17 (Co. "B"). Mexico July 15. Battle of Wilson's Creek August 10. Retreat to Rolla, thence to St. Louis, Mo. 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. Attached to District of St. Louis to October, 1861. 4th Division, Army of the Southwest, to May, 1862. 2nd Division, Army of the Mississippi, to June, 1862. 5th Division, Army of the Mississippi, to August.


 * 2nd Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union) Organized at St. Louis, Mo., May 7, 1861. Attached to Lyon's Army of the West. Capture of Camp Jackson, St. Louis, May 10. Duty at St. Louis till July 23. (Co. "A" detached guarding bridge on Northern Missouri Railroad June 16-August 14.) A Detachment moved to Bird's Point, Mo., July 23, and duty there till August 14. Moved to St. Louis. A Detachment guard bridges on St. Louis &amp; Iron Mountain Railroad. Mustered out August 16, 1861.

-3rd Units

 * 3rd Regiment, Missouri Infantry (Union) Organized at St. Louis, Mo., September 3, 1861, to January 18, 1862. Attached to 2nd Brigade, Army of Southwest Missouri, to February, 1862. Unassigned, Army of Southwest Missouri, to May, 1862. 3rd Division, Army of Southwest Missouri, to July, 1862. District of Eastern Arkansas, Dept. of Missouri, to November, 1862. 1st Brigade, 1st Division, District of Eastern Arkansas, to December, 1862. 1st Brigade, 11th Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. 2nd Brigade, 4th Division, Sherman's Yazoo Expedition, to January, 1863. 2nd Brigade, 1st Division, 15th Army Corps, Army of the Tennessee, to September, 1863. 1st Brigade, 1st Division, 15th Army Corps, to December, 1863. 3rd Brigade, 1st Division, 15th Army Corps, to November, 1864.


 * 3rd Regiment, Missouri Infantry (3 months, 1861) (Union) Organized at St. Louis, Mo., April 22, 1861. Attached to Lyons' Army of the West. Capture of Camp Jackson, St. Louis, May 10. March to Rolla, thence to Springfield, Mo., June 13-24. March to Neosho June 26-30. Retreat to Mt. Vernon, thence to Springfield, Mo., July 5-11. Action at Carthage July 5. Battle of Wilson's Creek August 10. Retreat to Rolla, thence to St. Louis August 11-21. Mustered out September 4, 1861.


 * 3rd Regiment, US Reserve Corps, Missouri Infantry (Union) Organized at St. Louis. Mo., August and September, 1861. Attached to 2nd Brigade, Sigel's Division, Fremont's Army of the West. Fremont's Campaign in Missouri September to November. At Rolls, Mo., till January, 1862. 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, Mo., May 8, 1861. Attached to Lyons' Army of the West. Capture of Camp Jackson May 10. Provost duty at St. Louis till July 1. Three Companies sent to Southwest Missouri July 1. Expedition to Northern Missouri against Harris July 16 (7 Cos.). Action at Fulton July 17. Duty at Fulton and St. Louis till August 18. Mustered out August 18, 1861.

-4th Units

 * 4th Regiment, Missouri Infantry (Union) Organized at St. Louis, Missouri, by consolidation of Gasconade Battalion and 3rd Regiment United States Reserve Corps January, 1862. On duty in Districts of Southwest Missouri and St. Louis at Pacific City and St. Louis until February, 1863. Mustered out February 1, 1863.


 * 4th Regiment, Missouri Infantry (3 months, 1861) (Union) Organized at St. Louis, Missouri, April 22, 1861. Served in various locations, then at Fulton, Missouri. Mustered out July 30, 1861.


 * 4th Regiment, US Reserve Corps, Missouri Infantry (Union) Organized at St. Louis, Missouri, September, 1861. Duty in District of St Louis until January, 1862. Mustered out January 13, 1862.


 * 4th Regiment, US Reserve Corps, Missouri Infantry (3 months, 1861) (Union) Organized at St. Louis, Missouri, May 8, 1861. Served in various locations, then at Bird's Point, Missouri, July 18, and duty there until August. Mustered out August 18, 1861.