20th Illinois Infantry

== Regimental History and Service Record ==
Organized at Joliet, Ill., and mustered in June 13, 1861. Moved to Alton, Ill., June 18, thence to St. Louis, Mo., July 6, and to Cape Girardeau, Mo., July 10, 1861. Attached to District of Cairo to October, 1861. Bird's Point, Mo., unattached to February, 1862. 2nd Brigade, 1st Division, District of Cairo, February, 1862. 2nd Brigade, 1st Division, District of West Tennessee, and Army of the Tennessee to July, 1862. 2nd Brigade, 1st Division, District of Jackson, Tenn., to September, 1862. 3rd Brigade, 1st Division, District of Jackson, to November, 1862. 1st Brigade, 3rd Division, Right Wing 13th Army Corps, Dept. of the Tennessee, to December, 1862. 1st Brigade, 3rd Division, 17th Army Corps, Army of the Tennessee, to July, 1864. Provost Guard, 3rd Division, 17th Army Corps, to April, 1865. 1st Brigade, 3rd Division, 17th Army Corps, to July, 1865.
SERVICE.--Duty at Cape Girardeau, Mo., until September 12, 1861. 
* August 7-10, 1861 - Expedition to Price's Landing, Commerce, Benton and Hamburg, Missouri
Expedition to Jackson August 28-September 5. Moved to Bird's Point, Mo., September 12, and duty there until February, 1862. Operations about Ironton and Fredericktown October 12-25, 1861. Action at Fredericktown October 21. Charleston January 8, 1862. Expedition toward Columbus, Ky., January 15-21. Operations against Fort Henry, Tenn., February 2-6, 1862. Occupation of Fort Henry February 6-12. Investment and capture of Fort Donelson, Tenn., February 12-16. 
* Moved to Savannah March 5-13, thence to Pittsburg Landing March 28-25. 
* April 6-7, 1862 - Battle of Shiloh, Tennessee
Advance on and siege of Corinth, Miss., April 29-May 30. March to Purdy, thence to Jackson, Tenn., June 5-8, and duty there until August 15. At Oustenaula, Tenn., until August 31. Medon Station, Mississippi Central R. R., August 31 (4 Companies). Toon's Station, Mississippi Central R. R., August 31 (Detachment). Britton's Lane September 1. At Jackson until October 22. Guard bridges along Mobile & Ohio R. R. until November 8. Grant's Central Mississippi Campaign November 8, 1862, to January 10, 1863. Reconnaissance from LaGrange November 8-9, 1862. Holly Springs, Miss., December 20 (Detachment). Moved to Memphis, Tenn., January 12, 1863, and duty there until February 20. Moved to Lake Providence, La., February 20-24, thence to Betty's Landing March 16. Moved to Milliken's Bend April 19. 
* 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 
Raymond May 12. Jackson May 14. Champion's Hill May 16. Big Black River 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
* Occupation of Vicksburg July 4 to November 6. 
** August 20-September 2, 1863 - Expedition from Vicksburg, Mississippi to Monroe, Louisiana
Expedition to Canton October 14-20. Bogus Chitto Creek October 17. At Big Black November 6 to February 4, 1864. 
* February 3-March 2, 1864 - Expedition from Vicksburg, Mississippi to Meridian, MississippiOriginally referenced February 4-March 1 on unit homepage
Meridian February 13-14. Chunky Station February 14. Canton February 29. Veterans absent on furlough March 2 to April 22. Moved to Cairo, Ill., April 28, thence to Clifton, Tenn., April 30-May 5. March to Huntsville, Ala., May 5-23, thence to Ackworth, Ga., via Decatur and Warrenton, Ala., and Rome and Kingston, Ga., May 28-June 8. 
* June 8-September 8, 1864 - The Atlanta Campaign
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, GeorgiaNot originally referenced on unit homepage
** Operations about Marietta and against Kenesaw Mountain June 10-July 2. 
** Assault on Kenesaw June 27. 
** Nickajack Creek July 2-5. 
** Howell's Ferry July 5. 
** Chattahoochie River July 6-17. 
** Leggett's Bald Hill July 20-21. 
** July 22, 1864 - Battle of Atlanta, Georgia
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** 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 28-November 3. 
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Salkehatchie Swamp, S.C., February 1-5. 
** Barker's Mills, Whippy Swamp, February 2. 
** South Edisto River February 9. 
** North Edisto River February 11-12. 
** Columbia February 15-17. Fayetteville, N. C., March 13. 
** Battle of Bentonville 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 7-12. 
** Mustered out July 16 and discharged at Chicago, Ill., July 24, 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 ==
Source 	Casualties	Remarks
Dyer 	
* 7 Officers and 132 enlisted men killed and mortally wounded 
* 1 Officer and 191 enlisted men killed by disease
* Total 331	None
Fox 	
* Fox lists this unit as:
** 76th on the list of units with losses based on duration of the entire term of service of the unit (6th of the Illinois troops)	
WotRWiki Statistics	
* troops killed
** Includes troops mortally wounded
** Includes troops killed by disease
** All others are troops killed in action or under special circumstances	
== Legacy ==
== Notes ==
== Sources == 
* (Pages 703, 704, 714, 715, 721, 722, 776, 777, 779, 782, 784, 798, 834, 846, 1053)
* (Page 10)
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