Organization

• Organized at Cairo, Ill., for three years' service July 25, 1861.
• Attached to District of Cairo to October, 1861.
• 2nd Brigade, District of Cairo, to February, 1862.
• 1st Brigade, 1st Division, District of Cairo, February, 1862.
• 1st Brigade, 1st Division, District of West Tennessee, and Army of the Tennessee, to July, 1862.
• 1st Brigade, 1st Division, District of Jackson, Dept. of the Tennessee, to September, 1862.
• 4th Brigade, 1st Division, District of Jackson, to November, 1862.
• 4th Brigade, 3rd Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862.
• 3rd Brigade, 3rd Division, 17th Army Corps, Army of the Tennessee, to April, 1864.
• Maltby's Brigade, District of Vicksburg, Miss., to August, 1864.
• 1st Brigade, 2nd Division, 19th Army Corps, Dept. of the Gulf, to December, 1864.
• 2nd Brigade, Reserve Division, Military Division West Mississippi, to February, 1865.
• 2nd Brigade, 1st Division, Reserve Corps, M.D. W. M., February, 1865.
• 2nd Brigade, 1st Division, 13th Army Corps (New), M.D. W. M., to June, 1865.
• Dept. of Louisiana to May, 1866.

Service

• Duty at Cairo, Ill, till October, 1861.
• Moved to Bird's Point, Mo., and duty there till February, 1862.
• Expedition against Thompson's forces November 2-12, 1861.
• Expeditions toward Columbus, Ky., January 13-20, 1862.
• Investment and capture of Fort Donelson, Tenn., February 12-16.
• Moved to Pittsburg Landing, Tenn., March 6-13.
• Battle of Shiloh April 6-7.
• Advance on and siege of Corinth, Miss., April 29-May 30.
• Moved to Bethel June 4-6, thence to Jackson June 15.
• Duty there and guard duty at Toone's and Medon Stations till October.
• Grant's Central Mississippi Campaign October 31, 1862, to January 10, 1863.
• Ordered to Lagrange November, 1862.
• Reconnoissance from Lagrange November 8-9.
• March to Grand Junction January 4-9, 1863, and to Memphis, Tenn., January 12-19.
• Moved to Lake Providence, La., February 22, and duty there till April.
• Moved to Milliken's Bend, La., April 12.
• Movement on Bruinsburg and turning Grand Gulf April 25-30.
• Battles of Thompson's Hill, Port Gibson, May 1.
• South Fork Bayou Pierrie May 2.
• Raymond May 12.
• Jackson, Miss., May 14.
• Champion's Hill May 16.
• Siege of Vicksburg, Miss., May 18-July 4.
• Assaults on Vicksburg May 19 and 22.
• Surrender of Vicksburg July 4.
• Garrison duty at Vicksburg till July, 1864.
• Stevenson's Expedition from Vicksburg to Monroe, La., August 20-September 2, 1863.
• Expedition to Canton October 14-20.
• Bogue Chitto Creek October 17.
• Meridian Campaign February 3-March 5, 1864.
• Regiment Veteranize March 24, 1864.
• Expedition to Pearl River, Miss., July 2-10.
• Jackson July 7.
• Expedition to Morganza, La., July 29-September 3.
• Moved to mouth of White River September 3-8, and duty there till October 18.
• Movement to Memphis, Tenn., and return October 18-30.
• Moved to Duvall's Bluff November 9, thence to Memphis, Tenn., November 28. March to Moscow and return December 29-31.
• Moved to New Orleans, La., January 1-4, 1865.
• Campaign against Mobile and its defences February to April.
• Siege of Spanish Fort and Fort Blakely March 26-April 8.
• Assault and capture of Fort Blakely April 9. Occupation of Mobile April 12.
• Duty at Mobile till May 27.
• Moved to New Orleans, La., thence to Shreveport May 27-June 9.
• Moved to Marshall, Texas, and duty there till September.
• At Alexandria, La., till April, 1866.
• Mustered out at Baton Rouge May 4 and discharged at Springfield, Ill., May 13, 1866.

Casualties

• Regiment lost during service 6 Officers and 160 Enlisted men killed and mortally wounded and 155 Enlisted men by disease. Total 321.