Organization

• 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.

Service

• 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.

Casualties

• 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.