UNION MISSOURI VOLUNTEERS
12th Regiment, Missouri Infantry
Organized at St. Louis, Mo., August, 1861. Attached to Fremont's Army of the West to January, 1862. 2nd Brigade, Army of Southwest Missouri, to February, 1862. 2nd Brigade, 1st Division, Army of Southwest Missouri, to May, 1862. 3rd Division, Army of Southwest Missouri, to July, 1862. District of Eastern Arkansas, Dept. of Missouri, 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, to September, 1863. 1st Brigade, 1st Division, 15th Army Corps, to December, 1863. 3rd Brigade, 1st Division, 15th Army Corps, to November, 1864.
- Fremont's advance on Springfield, Mo., September to November, 1861. Moved to Jefferson City, thence to Sedalia and Springfield. To Wilson's Creek October 6-8. Duty at Rolla till January, 1862. Expedition to Danville December 26, 1861. Curtis' Campaign in Missouri and Arkansas against Price January to March, 1862. Advance on Springfield February 2-16. Pursuit of Price into Arkansas February 14-29. Battles of Pea Ridge, Ark., March 6-8.
March to Batesville April 5-May 3; thence to Helena, Ark., May 25-July 14. Expedition from Helena to mouth of White River August 5-8. Moved to Ironton-Pilot Knob, Mo., September 1. To St. Genevieve November 12, and return to Helena November 23. 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. Duty there till March and at Milliken's Bend till April. Expedition to Greenville, Black Bayou and Deer Creek April 2-14. Demonstration 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 12-13. Jackson May 14. Siege of Vicksburg, Miss., May
18-July 4. Assaults on Vicksburg May 19 and 22. Advance on Jackson, Miss., July 4-10. Siege of Jackson July 10-17. Bolton's Depot July 16. Brier Creek, near Canton, July 17. Clinton July 18. Camp at Big Black till September 27. Moved to Memphis, Tenn., thence march to Chattanooga, Tenn., September 27-November 21. Operations on Memphis & Charleston Railroad in Alabama October 20-29. Cherokee Station October 21 and 29. Cane Creek October 26. Tuscumbia October 26-27. Battles of Chattanooga November 23-27.
Lookout Mountain November 23-24. Mission Ridge November 25. Ringgold Gap, Taylor's Ridge, November 27. March to relief of Knoxville November 28-December 8. Garrison duty in Alabama at Woodville and Scottsboro, Ala., and at Cleveland, Tenn., to May, 1864. Atlanta (Ga.) Campaign May 1 to September 8. Demonstration on Resaca May 8-13. Battle of Resaca May 13-15. Advance on
Dallas May 18-25. Battles about Dallas, New Hope Church and Allatoona
Hills May 25-June 5. 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. Battle of Atlanta July 22. Siege of
Atlanta July 22-August 25. Ezra Chapel, Hood's 2nd Sortie, July 28. Flank movement on Jonesboro August 25-30. Lovejoy Station September 2-6. Pursuit of Hood into Alabama October 1-21. Mustered out by Companies from August 12 to November 14, 1864. Consolidated with Detachments from 3rd and 17th Missouri Volunteer Infantry and subsequently transferred to 15th Missouri Infantry.
Regiment lost during service 10 Officers and 102 Enlisted men killed and mortally wounded and 2 Officers and 94 Enlisted men by disease. Total 208.
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