(II) 1st Ohio Infantry

== Regimental History and Service Record ==
* Organized at Camp Corwin, Dayton, Ohio, August 5 to October 30, 1861. 
Moved to Cincinnati, Ohio, October 31; thence to Louisville, Ky., November 5, and to West Point, Ky., November 8. Moved to Elizabethtown and Camp Nevin, Ky., November 15-16. Camp at Bacon Creek and Green River, Ky., until February, 1862. Attached to 4th Brigade, 2nd Division, Army of Ohio, to September, 1862. 4th Brigade, 2nd Division, 1st Army Corps, Army of Ohio, to November, 1862. 3rd Brigade, 2nd Division, Right Wing 14th Army Corps, Army of the Cumberland, to January, 1863. 3rd Brigade, 2nd Division, 20th Army Corps, Army of the Cumberland, to October, 1863. 2nd Brigade, 3rd Division, 4th Army Corps, Army of the Cumberland, to September, 1864.
SERVICE.--March to Nashville, Tenn., February 14-25, 1862. Occupation of Nashville February 25 to March 16. March to Duck River March 16-21, and to Savannah, Tenn., March 31-April 6. 
* April 6-7, 1862 - Battle of Shiloh, Tennessee
Advance on and siege of Corinth, Miss.. April 29-May 30. Duty at Corinth until June 10. Moved to Iuka, Miss., thence to Tuscumbia, Florence and Huntsville, Ala., June 10-July 5. Duty at Boulay Fork until August 30. Expedition to Tullahoma July 14-18. March to Pelham August 24, thence to Altamont August 28. Reconnaissance toward Sequatchie Valley August 29-30. March to Louisville, Ky., in pursuit of Bragg August 30-September 26. Pursuit of Bragg into Kentucky October 1-17. Lawrenceburg October 8. 
* October 9, 1862 - Skirmish at Perryville, Kentucky
March to Nashville, Tenn., October 17-November 7, and duty there until December 26. Kimbrough's Mills, Mill Creek, December 6. Advance on Murfreesboro December 26-30. Battle of Stone's River December 30-31, 1862, and January 1-3, 1863. Duty at Murfreesboro until June. Middle Tennessee (or Tullahoma) Campaign June 23-July 7. Liberty Gap June 24-27. 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
* Reopening Tennessee River October 26-29.
* Brown's Ferry October 27.
* November 23-27, 1863 - The Chattanooga/Ringgold Campaign
** Orchard Knob November 23.
** Mission Ridge November 24-25.
** March to relief of Knoxville November 28-December 8.
* East Tennessee Campaign December, 1863-January, 1864.
* Operations about Dandridge January 16-17, 1864.
* Operations in East Tennessee until April. 
* May 1-July 25, 1864 - The Atlanta Campaign
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** May 9-13, 1864 - Demonstration on Dalton, 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 
** 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. 
** Siege of Atlanta July 22-26. 
* Ordered to the reach for muster out. 
* Scout from Whitesides, Tenn., to Sulphur Springs September 2-5 (Detachment). 
* Mustered out September 24 to October 14, 1864. 
* Recruits transferred to (II) 18th Ohio Infantry October 31, 1864.
== Regimental Roster ==
== Regiment Statistical Information ==
Source 	Casualties	Remarks
Dyer 	
* 5 Officers and 116 enlisted men killed and mortally wounded 
* 130 enlisted men killed by disease
* Total 251	None
Fox 	
* Fox lists this unit as:
** 175th on the list of units with losses based on duration of the entire term of service of the unit (15th 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, 732, 846, 860, 862, 866, 1496)
* (Page 13)
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