31st Illinois Infantry

== Regimental History and Service Record ==
The "Dirty First"
Organized at Jacksonville, Ill., and mustered in at Cairo, Ill., September 18, 1861. Attached to District of Cairo to October, 1861. 1st 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, to September, 1862. 2nd Brigade, 1st Division, District of Jackson, to November, 1862. 1st Brigade, 3rd Division, Right Wing 13th Army Corps (Old), Department of the Tennessee, to December, 1862. 1st Brigade, 3rd Division, 17th Army Corps, to April, 1865. 2nd Brigade, 4th Division, 17th Army Corps, to July, 1865.
SERVICE.--Duty at Cairo, Ill., until February, 1862. 
* November 6-November 7, 1861 - Expedition to Belmont and Charleston, Missouri
** November 7, 1861 - Battle of Belmont, Missouri
Reconnaissance of Columbus, Ky., January 16-22, 1862. Operations against Forts Henry and Heiman February 2-6. Capture of Forts Henry and Heiman February 6. Investment and capture of Fort Donelson, Tenn., February 12-16. Garrison at Fort Donelson until April 22. Moved to Pittsburg Landing, Tenn., April 22-25. Advance on and siege of Corinth, Miss., April 29-May 30. Moved to Jackson, Tenn., June 4-7, and duty there until November. Action at Burnt Bridge, near Humboldt, Tenn., September 5. March to relief of Corinth and pursuit to Ripley October 3-12. Actions at Chewalla and Big Hill October 5. Grant's Central Mississippi Campaign November 2, 1862, to January 10, 1863. Reconnaissance from LaGrange November 8-9, 1862. Moved to La Grange, thence to Memphis, Tenn., January 10-19, 1863, and to Lake Providence, La., March 10. Moved to Milliken's Bend, La., April 17. 
* April 22, 1863 - Engagement at Vicksburg and Warrenton, Mississippi (detachment)
* Movement on Bruinsburg and turning Grand Gulf April 25-30. 
* May 1, 1863 - Battle of Port Gibson, Mississippi 
* North Fork Bayou Pierre and Ingraham's Heights May 3. 
* Battles of Raymond, Miss., May 12. 
* Jackson May 14. 
* Champion's Hill May 16. 
* Big Black River Bridge May 17. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
** May 19, 1863 - Assault on Vicksburg, Mississippi
** May 22, 1863 - Assault on Vicksburg, Mississippi
** July 4, 1863 - Surrender of Vicksburg, Mississippi
* Duty there and at Big Black until February, 1864. 
** August 20-September 2, 1863 - Expedition from Vicksburg, Mississippi to Monroe, Louisiana
* Expedition toward Canton October 14-20. 
* Bogue Chitto Creek October 17. 
* February 3-March 2, 1864 - Expedition from Vicksburg, Mississippi to Meridian, Mississippi
Meridian February 13-14. Chunkey Station February 14. Meridian February 14-15. Brandon February 16. Canton February 29. Veterans on furlough March and April, 1864. Rendezvous at Carbondale, Ill., and moved to Cairo, Ill., thence to Clifton, Tenn., and march to Ackworth, Ga., via Huntsville and Decatur, Ala., and Rome, Ga., April 28-June 8. 
* June 8-September 8, 1864 - The Atlanta Campaign
** Operations about Marietta and against Kenesaw Mountain June 10-July 2. 
** Assault on Brushy Mountain June 15. 
** Assault on Kenesaw June 27. 
** Nickajack Creek July 2-5. 
** Chattahoochie River July 5-17. 
** Howell's Ferry July 5. 
** Battle of Leggett's Bald Hill July 20-21. 
** July 22, 1864 - Battle of Atlanta, Georgia
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Ezra's Chapel, Hood's second sortie, July 28. 
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
** Lovejoy Station September 2-6. 
* Pursuit of Hood into Alabama October 1-26. 
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Pocotaligo, S. C., January 14. 
** Salkehatchie Swamps February 1-5. 
** Barker's Mills, Whippy Swamp, February 3. 
** Binnaker's Bridge, South Edisto River, February 9. 
** Orangeburg, North Edisto River, February 11-12. 
** Columbia February 15-17. 
** Battle of Bentonville, N. C., March 20-21. 
** Occupation of Goldsboro March 24. 
** Advance on Raleigh April 10-14. 
** Occupation of Raleigh April 14. 
** Bennett's House April 26. 
*** Surrender of Johnston and his army. 
* March to Washington, D.C., via Richmond, Va., April 29-May 19. 
* Grand Review May 24. 
* Moved to Louisville, Ky., June 8-11, and Provost duty there until July 19. 
* Mustered out July 19 and discharged at Springfield, Ill., July 31, 1865.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Regimental Band
 
 
 Company A
 
 
 Company B
 
 
 Company C
 
 
 Company D
 
 
 Company E
 
 
 Company F
 
 
 Company G
 
 
 Company H
 
 
 Company I
 
 
 Company K
 
 
 Unassigned
 
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== Regiment Statistical Information ==
* Regiment lost during service 9 Officers and 166 Enlisted men killed and mortally wounded and 3 Officers and 293 Enlisted men by disease. Total 471.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 703, 714, 715, 721, 722, 776, 777, 779, 782, 784, 799, 834, 1058-1059)
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