(II) 15th Ohio Infantry

== Regimental History and Service Record ==
Organized at Mansfield, Ohio, September, 1861. Moved to Camp Dennison, Ohio, September 26, thence to Lexington, Ky., October 4. Duty at Camp Nevin, Ky., October 14-December 9, 1861. Attached to McCook's Command at Nolin October to November, 1861. 6th Brigade, Army of the Ohio, to December, 1861. 6th Brigade, 2nd Division, Army Ohio, to September, 1862. 6th Brigade, 2nd Division, 1st Army Corps, Army Ohio, to November, 1862. 1st Brigade, 2nd Division, Right Wing 14th Army Corps, Army of the Cumberland, to January, 1863. 1st Brigade, 2nd Division, 20th Army Corps, Army of the Cumberland, to October, 1863. 1st Brigade, 3rd Division, 4th Army Corps, to August, 1865. Dept. of Texas to November, 1865.
SERVICE.--Occupation of Munfordsville, Ky., December 10, 1861. Duty at Bacon Creek, Ky., until February 14, 1862. Advance to Bowling Green, Ky., and Nashville, Tenn., February 14-March 2. March to Savannah, Tenn., March 16-April 6. 
* April 6-7, 1862 - Battle of Shiloh, Tennessee
Advance on and siege of Corinth, Miss., April 29-May 30. March to Battle Creek, Ala., June 10-July 18, and duty there until August 20. March to Louisville, Ky., in pursuit of Bragg, August 20-September 26. Pursuit of Bragg into Kentucky October 1-15. March to Nashville, Tenn., October 16-November 7, and duty there until December 26. Advance on Murfreesboro, Tenn., December 26-30. Battle of Stone's River December 30-31, 1862, and January 1-3, 1863. Duty at Murfreesboro until June. Reconnaissance from Murfreesboro March 6-7. Middle Tennessee or Tullahoma Campaign June 22-July 7. Liberty Gap June 22-27. Occupation of Middle Tennessee until August 16. 
* 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 23-24.
** Mission Ridge November 25.
** Pursuit to Graysville November 26-27.
* March to relief of Knoxville, Tenn., November 28-December 8.
* Operations in East Tennessee until February, 1864.
* At Cleveland, Tenn., until April. 
* May 1-September 8, 1864 - The Atlanta Campaign
** May 9-13, 1864 - Demonstration on Dalton, Georgia
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** May 17, 1864 - Engagement at Adairsville, 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
** Pickett's Mills May 27. 
** 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
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
** Lovejoy Station September 2-6. 
* Operations against Hood in North Georgia and North Alabama September 29-November 3. 
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. Camp at Bird Springs, Ala., until March, 1865. Operations in East Tennessee March 15-April 22. At Nashville, Tenn., until June. Moved to New Orleans, La., June 16, thence to Texas. Duty at Green Lake until August 10, and at San Antonio until November. Mustered out November 21, 1865. Reach Columbus, Ohio, December 25, and discharged from service December 27, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
Source 	Casualties	Remarks
Dyer 	
* 7 Officers and 172 enlisted men killed and mortally wounded 
* 1 Officer and 135 enlisted men killed by disease
* Total 315	None
Fox 	
* Fox lists this unit as:
** 173rd on the list of units with losses based on duration of the entire term of service of the unit (13th of the Ohio 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 701, 703, 704, 705, 706, 707, 715, 846, 860, 862, 866, 1503)
* (Page 13)
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