(II) 20th Ohio Infantry

== Regimental History and Service Record ==
Organized at Columbus, Ohio, August 19 to September 21, 1861. Moved to Camp King near Covington, Ky., and mustered in October 21. Duty at Covington and Newport, Ky., until February 11, 1862. Attached to 3rd Brigade, 3rd Division, Army of the Tennessee, February to May, 1862. 2nd Brigade, 3rd Division, Army Tennessee, to July, 1862. Unattached, District of Jackson, Tenn., to November, 1862. 2nd Brigade, 3rd Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. 2nd Brigade, 3rd Division, 17th Army Corps, Army of the Tennessee and Army of Georgia, to July, 1865.
SERVICE.--Investment and capture of Fort Donelson, Tenn., February 14-16, 1862. Expedition toward Purdy and operations about Crump's Landing, Tenn., March 9-14. 
* April 6-7, 1862 - Battle of Shiloh, Tennessee
Advance on and siege of Corinth, Miss., April 29-May 30. Guard duty at Pittsburg Landing until June, and at Bolivar, Tenn., until September. Action at Bolivar August 30. Duty in the District of Jackson until November. Grant's Central Mississippi Campaign November 2, 1862, to January 10, 1863. Action at Holly Springs, Miss., December 21, 1862. Lafayette, Tenn., January 14, 1863. Moved to Memphis, Tenn., January 26, thence to Lake Providence, La., February 22, and duty there until April. Movement on Bruinsburg and turning Grand Gulf April 25-30. 
* May 1, 1863 - Battle of Port Gibson, Mississippi
Forty Hills and Hankinson's Ferry May 3-4. Battle of Raymond May 12. Jackson May 14. Champion's Hill May 16. 
* 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 at Vicksburg until February, 1864. 
** August 20-September 2, 1863 - Expedition from Vicksburg, Mississippi to Monroe, Louisiana
* Expedition to Canton October 14-20. 
* Bogue Chitto Creek October 17. 
* Regiment reenlisted January 1, 1864. 
* February 3-March 2, 1864 - Expedition from Vicksburg, Mississippi to Meridian, Mississippi
* Canton February 26. 
* Veterans on furlough March and April. 
* Moved to Clifton, Tenn., thence march to Ackworth, Ga., April 29-June 9. 
* June 8/9?-September 8, 1864 - The Atlanta Campaign
** 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 or 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. 
** Sandtown August 28. 
** Battle of Jonesboro August 31-September 2. 
** Lovejoy Station September 2-6. 
* Operations against Hood in North Georgia and North Alabama September 29-November 3. 
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* A detachment participated in the Battle of Nashville, Tenn., December 15-16, 1864.
* January 1-April 26, 1865 - The Carolinas Campaign
** Pocotaligo, S.C., January 14. 
** Barker's Mills, Whippy Swamp, February 2. 
** Salkehatchie Swamp February 3-5. 
** South Edisto River February 9. 
** North Edisto River February 11-13. 
** Columbia February 16-17. 
** 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 20. 
* Grand Review May 24. 
* Moved to Louisville, Ky., June. 
* Mustered out at Louisville, Ky., July 18, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 2 Officers and 87 Enlisted men killed and mortally wounded and 4 Officers and 267 Enlisted men by disease. Total 360.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 703, 715, 720, 721, 777, 779, 782, 785, 834, 846, 1505-1506)
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