121st Ohio Infantry

== Regimental History and Service Record ==
Organized at Delaware, Ohio, September 11, 1862. Ordered to Cincinnati, Ohio, September 11; thence to Covington, Ky., September 15, and to Louisville, Ky., September 20. Attached to 34th Brigade, 10th Division, Army of the Ohio, September, 1862. 34th Brigade, 10th Division, 1st Army Corps, Army of the Ohio, to November, 1862. District of West Kentucky, Dept. of the Ohio, to February, 1863. Reed's Brigade, Baird's Division, Army of Kentucky, Dept. of the Cumberland, to June, 1863. 2nd Brigade, 1st Division, Reserve Corps, Army of the Cumberland, to October, 1863. 2nd Brigade, 2nd Division, 14th Army Corps, Army of the Cumberland, to June, 1865.
SERVICE.--Pursuit of Bragg into Kentucky October 1-15, 1862. 
* October 8, 1862 - Battle of Perryville, Kentucky 
Moved to Lebanon, Ky., and duty there until November, and at Columbia until December. Operations against Morgan December 22, 1862, to January 3, 1863. Ordered to Louisville, thence moved to Nashville, Tenn., February 9; thence to Franklin, Tenn., February 12, and duty there until June. Middle Tennessee (or Tullahoma) Campaign June 23-July 7. Duty at Fayetteville August 25-September 5. 
* August 16-September 22, 1863 - The Chickamauga Campaign
** September 19-September 20, 1863 - Battle of Chickamauga, Georgia
* September 24-October 27, 1863 - Siege of Chattanooga, Tennessee
* November 23-27, 1863 - The Chattanooga/Ringgold Campaign
** Orchard Knob November 23.
** Tunnel Hill November 24-25.
** Mission Ridge November 25.
** Chickamauga Station November 26.
* March to relief of Knoxville, Tenn., November 28-December 17.
* Duty at Rossville, Ga., until May, 1864. 
* May 1-September 8, 1864 - The Atlanta Campaign
** Tunnel Hill May 6-7. 
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** Buzzard's Roost Gap May 8-9. 
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** Advance on Dallas May 18-25. 
** May 25-June 5, 1864 - Operations in Bartow County, Georgia
** Operations about Marietta and against Kenesaw Mountain June 10-July 2. 
** Pine Hill June 11-14. 
** Lost Mountain June 15-17. 
** Assault on Kenesaw June 27. 
** Ruff's Station July 4. 
** Chattahoochie River July 5-17. 
** Peach Tree Creek July 19-20. 
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Utoy Creek August 5-7. 
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
* Operations against Forest and Hood in North Georgia and North Alabama September 29-November 3. 
* November 15-December 21, 1864 - The Savannah Campaign
** Sandersville November 26. 
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Taylor's Hole Creek, Aversyboro, N. C., March 16. 
** Battle of Bentonville March 19-21. 
** 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. 
* Mustered out June 8, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 9 Officers and 92 Enlisted men killed and mortally wounded and 2 Officers and 246 Enlisted men by disease. Total 349.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 701, 703, 704, 705, 707, 715, 721, 723, 733, 834, 860, 862, 866, 1547)
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