31st Missouri Infantry (U)

== Regimental History and Service Record ==
Organized at St. Louis, Carondelet and Ironton, Me., August 11 to October 7, 1862. Attached to Cape Girardeau, District of Missouri, Dept. of Missouri, to December, 1862. 1st Brigade, 11th Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, December, 1862. 1st Brigade, 4th Division, Sherman's Yazoo Expedition, to January, 1863. 1st Brigade, 1st Division, 15th Army Corps, Army of the Tennessee, to December, 1863. 2nd Brigade, 1st Division, 15th Army Corps, to April, 1864. 3rd Brigade, 1st Division, 15th Army Corps, to September, 1864. 1st Brigade, 1st Division, to November, 1864.
SERVICE.--March to Patterson, Mo., October 21, 1862, and duty there until November 24. March to St. Genevieve, Mo., November 24, thence moved to Helena, Ark., December 1. Sherman's Yazoo Expedition December 22, 1862, to January 3, 1863. Chickasaw Bayou December 26-28. Chickasaw Bluff December 29. Expedition to Arkansas Post, Ark., January 3-10, 1863. Assault and capture of Fort Hindman, Arkansas Post, January 10-11. Moved to Young's Point, La., January 17-23, and duty there until March, and at Milliken's Bend until April. Expedition to Greenville, Black Bayou and Deer Creek April 2-14. Demonstrations on Haines' and Drumgould's Bluffs April 29-May 2. Moved to join army in rear of Vicksburg. Miss., via Richmond and Grand Gulf May 2-14. Mississippi Springs May 12. Jackson, Miss., May 14. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
** May 19, 1863 - Assault on Vicksburg, Mississippi
** May 22, 1863 - Assault on Vicksburg, Mississippi
* Advance on Jackson, Miss., July 4-10. 
* Siege of Jackson July 10-17. 
* Bolton's Depot July 16. 
* Briar Creek, near Canton, July 17. 
* Canton July 18. 
* At Big Black to September 27. 
* September 26-November 20, 1863 - Expedition from Vicksburg, Mississippi to Chattanooga, Tennessee
* Operations on Memphis & Charleston Railroad in Alabama October 20-29. 
* Cherokee Station October 21 and 29.
* Cane Creek October 26.
* Tuscumbia October 26-27. 
* November 23-27, 1863 - The Chattanooga/Ringgold Campaign
** Battles of Lookout Mountain November 23-24
** Mission Ridge November 25.
** Ringgold Gap, Taylor's Ridge, November 27.
* Garrison duty in Alabama until May, 1864.
* Clayton, Ala., March 14, 1864. 
* May 1-September 8, 1864 - The Atlanta Campaign
** May 8-13, 1864 - Demonstration on Resaca, Georgia
*** May 13, 1864 - Combat at Resaca, Georgia
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** Advance on Dallas May 18-25. 
** May 25-June 5, 1864 - Operations in Bartow County, Georgia
** Operations about Marietta and against Kenesaw Mountain June 10-July 2. 
** Bushy Mountain June 15-17. 
** Assault on Kenesaw June 27. 
** Nickajack Creek July 2-5. 
** Chattahoochie River July 6-17. 
** July 22, 1864 - Battle of Atlanta, Georgia
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Ezra Chapel, Hood's 2nd Sortie, July 28. 
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
** Lovejoy Station September 2-6. 
* Operations in North Georgia and North Alabama against Hood September 29-November 3. 
* Ship's Gap, Taylor's Ridge, October 16. 
* Consolidated with 32nd Missouri Infantry (U) on November 12, 1864, as 31st and 32nd Missouri (Consolidated) Infantry Battalion (U)
== Regimental Roster ==
== Regiment Statistical Information ==
== Legacy ==
== Notes ==
== Sources == 
* (Pages 703, 705, 707, 715, 779, 783, 866, 1334-1335)
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