90th Ohio Infantry

== Regimental History and Service Record ==
Organized at Camp Circleville, Lancaster, Ohio, and mustered in August 29, 1862. Ordered to Covington, Ky., August 30, thence to relief of Lexington September 1. Retreat to Louisville, Ky., September 2-15. Attached to 22nd Brigade, 4th Division, Army of the Ohio, September, 1862. 22nd Brigade, 4th Division, 2nd Army Corps, Army of the Ohio, to November, 1862. 1st Brigade, 2nd Division, Left Wing 14th Army Corps, Army of the Cumberland, to January, 1863. 1st Brigade, 2nd Division, 21st Army Corps, Army of the Cumberland, to October, 1863. 1st Brigade, 1st Division, 4th Army Corps, Army of the Cumberland, to June, 1865.
SERVICE.--Pursuit of Bragg to London, Ky., October 1-22, 1862. 
* October 8, 1862 - Battle of Perryville, KentuckyNot originally referenced on Dyer summary but listed on unit homepage
* October 10-22 - Pursuit from Perryville to London, Kentucky
At Glasgow, Ky., until November 8. March to Nashville, Tenn., and duty there until December 26. Advance on Murfreesboro, Tenn., December 26-30. Lavergne December 26-27. Battle of Stone's River December 30-31, 1862, and January 1-3, 1863. Duty at Murfreesboro until June. Expedition to Woodbury April 2. Middle Tennessee or Tullahoma Campaign June 23-July 7. Occupation of Middle Tennessee until August 18. 
* August 16-September 22, 1863 - The Chickamauga Campaign
** Lee and Gordon's Mills September 11-13. 
** September 19-September 20, 1863 - Battle of Chickamauga, Georgia
* September 24-October 27, 1863 - Siege of Chattanooga, Tennessee
* Moved to Bridgeport, Ala., October 26, and duty there until January 24, 1864. 
* At Coltewah, Tenn., until May. 
* May 1-September 8, 1864 - The Atlanta Campaign
** Tunnel Hill May 6-7. 
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** May 9-13, 1864 - Demonstration on Dalton, Georgia
** Buzzard's Roost Gap May 8-9. 
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** Near Kingston May 18-19. 
** Near Cassville May 19. 
** Advance on Dallas May 22-25. 
** 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, Smyrna Camp Ground, July 4. 
** Chattahoochie River July 5-17. 
** Peach Tree Creek July 19-20. 
** 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. 
** Duty at Atlanta until October 3. 
* Operations against Hood in North Georgia and North Alabama October 3-November 3. 
Moved to Pulaski, Tenn. Nashville Campaign November-December. Columbia, Duck River, November 24-27. Battle of Franklin November 30. Battle of Nashville December 15-16. Pursuit of Hood to the Tennessee River December 17-28. Moved to Huntsville, Ala., and duty there until March, 1865. Operations in East Tennessee March 15-April 22. Moved to Nashville, Tenn., and duty there until June. Mustered out June 13, and discharged at Camp Dennison, Ohio, June 21, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 5 Officers and 77 Enlisted men killed and mortally wounded and 170 Enlisted men by disease. Total 252.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 701, 703, 704, 705, 707, 715, 733, 834, 860, 1536-1537)
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