UNION ILLINOIS TROOPS
20th Illinois Infantry
* District of Cairo: August 1861 - February 1862
* Army of the Tennessee: February 1862 - July 1865
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., till September 12, 1861. Expedition to Price's Landing, Commerce, Benton and Hamburg August 7-10 (Co. "F"). Expedition to Jackson August 28-September 5. Moved to Bird's Point, Mo., September 12, and duty there till 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. Battle of Shiloh, Tenn., April 6-7. Advance on and siege of Corinth, Miss., April 29-May 30. March to Purdy, thence to Jackson, Tenn., June 5-8, and duty there till August 15. At Oustenaula, Tenn., till 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 till October 22. Guard bridges along Mobile & Ohio R. R. till November 8. Grant's Central Mississippi Campaign November 8, 1862, to January 10, 1863. Reconnoissance from LaGrange November 8-9, 1862. Holly Springs, Miss., December 20 (Detachment). Moved to Memphis, Tenn., January 12, 1863, and duty there till February 20. Moved to Lake Providence, La., February 20-24, thence to Betty's Landing March 16. Moved to Milliken's Bend April 19. Passage of Vicksburg and Warrenton batteries April 22 (Detachment). Movement on Bruinsburg and turning Grand Gulf April 25-30. Battles of Thompson's Plantation, or Port Gibson, May 1. Raymond May 12. Jackson May 14. Champion's Hill May 16. Big Black River May 17. Siege of Vicksburg, Miss., May 18-July 4. Assaults on Vicksburg May 19-22 and June 25. Surrender of Vicksburg July 4. Occupation of Vicksburg July 4 to November 6. Stephenson's Expedition to Monroe, La., August 20-September 2. Expedition to Canton October 14-20. Bogus Chitto Creek October 17. At Big Black November 6 to February 4, 1864. Meridian Campaign February 4-March 1. 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. Atlanta (Ga.) Campaign June 8-September 8. 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. Battle of Atlanta July 22. Siege of Atlanta July 22-August 25. 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. March to the sea November 15-December 10. Siege of Savannah December 10-21. Campaign of the Carolinas January to April, 1865. 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.
Regiment lost during service 7 Officers and 132 Enlisted men killed and mortally wounded and 1 Officer and 191 Enlisted men by disease. Total 331.
Source - "A Compendium of the War of the Rebellion" by Frederick H. Dyer
Company A Champaign County
New Company A Will County
Company B Will County
Company C McLean County
Company D Livingston County
Company E DeWitt County
Company F Will County
Company G Kankakee County
Company H LaSalle & Putnam counties
Company I Iroquois County
Company K Kendall & Will Counties