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 Division, US Reserve Corps, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Battalion, Fremont Rangers, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Battalion, Cass County, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Battalion, US Reserve Corps, Missouri Cavalry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Battalion, Missouri State Militia Cavalry Organized at St. Charles, Mo., March 26, 1862. Broken up November 11, 1862.


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


 * 1st Northeast Regiment, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Regiment, Pioneers, Engineers and Mechanics, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Regiment, Missouri Light Artillery Batteries formed at various times between September 1, 1861 and June 1862. Served until various dates up to August 1865.


 * 1st Regiment, Missouri Cavalry Organized at Jefferson Barracks, Mo., September 6, 1861. (Regiment consolidated to 7 Cos. September 10, 1864.) 2nd Brigade, Cavalry Division, 7th Army Corps, to March, 1865. Separate Brigade, 7th Army Corps, to September, 1865.


 * 1st Northeast Cavalry Regiment, Missouri Home Guard "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Regiment, Missouri State Militia Cavalry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Regiment, Missouri Engineers (Union) Organized February 17, 1864, by consolidation of Bissell's Engineer Regiment of the West and 25th Regiment Missouri Infantry. Attached to Defences of Nashville &amp; Northwestern Railroad, Dept. of the Cumberland, to August, 1864. Engineers Sherman's Army to July, 1865.


 * 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.


 * 1st Flying Battery, Missouri Light Artillery (Union) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.

-2nd Units

 * 2nd Battalion, Missouri State Militia Cavalry (Union) Organized at Harrisville and Kansas City, Mo., March 17 to May 5, 1862. Attached to District of Central Missouri, Dept. of Missouri.


 * 2nd Northeast Regiment, Missouri Home Guard (Union) Organized in Northern Missouri July, 1861. Consolidated with 1st Northeast Infantry and designated 21st Missouri Infantry December 31, 1861.


 * 2nd Regiment, Missouri Light Artillery (Union) Organized at St. Louis, Mo., as 1st Regiment, Missouri Artillery, U. S. Reserve Corps, September 16 to November 6, 1861. Designation changed to 2nd Missouri Artillery November 20, 1861, and assigned to duty in forts about St. Louis till September, 1863. Consolidated to a Battalion of 5 Companies September 29, 1863.


 * 2nd Regiment, Missouri Cavalry (Merrill's Horse) (Union) Organized at Benton Barracks, Mo., by Captain Lewis Merrill, U. S. A., under authority of General Fremont, September 3 to December 11, 1861. (Co. "L" organized at St. Louis, Mo., January 1, 1863, and Co. "M" at Warrenton June 30, 1863.)


 * 2nd Regiment, Missouri State Militia Cavalry (Union) Organized in Missouri at large December, 1861, to April, 1862, and by consolidation of original 2nd and 11th Regiments, State Militia Cavalry. Attached to District of Northern Missouri, Dept. of Missouri, to March, 1863. District of St. Louis, Mo., Dept. of Missouri, to June, 1863. District of Southeast Missouri, Dept. of Missouri, to July, 1863. District of St. Louis, Mo., Dept. of Missouri, to April, 1865.


 * 2nd Regiment, Missouri Infantry (Union) Organized at St. Louis, Mo., September 10, 1861. Attached to 5th Brigade, Army of Southwest Missouri, Dept. of Missouri, November, 1861, to February, 1862. 1st Brigade, 2nd Division, Army of Southwest Missouri, to May, 1862. 2nd Brigade, 5th Division, Army of Mississippi, to September, 1862. 35th Brigade, 11th Division, Army of Ohio, to October, 1862. 35th Brigade, 11th Division, 4th Corps, Army of the Ohio, to November, 1862. 2nd Brigade, 3rd Division, Right Wing 14th Army Corps, Army of the Cumberland, to January, 1863. 2nd Brigade, 3rd Division, 20th Army Corps, to October, 1863. 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 Cavalry (Union) Organized at Palmyra, Mo., and St. Louis, Mo., October 15, 1861, to March 6, 1862. Attached to District of Rolla, Dept. of Missouri, to December, 1862. Cavalry Brigade, Army of Southeast Missouri, Dept. of Missouri, to June, 1863. 2nd Brigade, 1st Cavalry Division, Army of Southeast Missouri, Dept. of Missouri, to August, 1863. 2nd Brigade, 1st Cavalry Division, Arkansas Expedition, to December, 1863. 3rd Brigade, 1st Cavalry Division, Army of Arkansas, to January, 1864. 3rd Brigade, 1st Cavalry Division, 7th Army Corps, Dept. of Arkansas, to March, 1865. Separate Cavalry Brigade, 7th Army Corps, to June, 1865.


 * 3rd Regiment, Missouri State Militia Cavalry (1st Organization) (Union) Organized at Louisiana, Pike County, Mo., May 5, 1862. Guard line of the North Missouri Railroad and operations in Northeast Missouri against Porter till February, 1863. Prairie Jackson, Mo., April 9, 1862 (Cos. "A," "B" "C"). Near Fayetteville, Ark., July 15. Moore's Mills, near Fulton, July 24. Greenville July 26. Dallas August 24. Newtonia September 13. Monroe County September 16 and October 4. Operations against Marmaduke in Missouri December 31, 1862, to January 25, 1863. Springfield January 8, 1863. Regiment disbanded February 4. 1863.


 * 3rd Regiment, Missouri State Militia Cavalry (2nd Organization) (Union) Reorganized from 10th Regiment State Militia Cavalry February 2, 1863. Attached to District of St. Louis, Mo., Dept. of Missouri, to June, 1863. District of Southeast Missouri, Dept. of Missouri, to July, 1863. District of St. Louis, Mo., Dept. of Missouri, to July, 1865.


 * 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 Cavalry (Union) Organized February, 1862, by consolidation of Fremont Hussars and three Companies Hollan Horse. Served in various locations, then at Department of Texas to November, 1865.


 * 4th Regiment, Missouri State Militia Cavalry (Union) Organized at St. Joseph, Missouri, January 28 to May 14, 1862. Served in various locations, then at the District of Central Missouri, Department of Missouri, to July, 1865.


 * 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.