The 105th Ohio Infantry was organized at Cleveland, Ohio, and mustered in for three years service on August 20, 1862, under the command of Colonel Albert S. Hall.
The regiment was recruited in northeastern Ohio counties.
The regiment was attached to 33rd Brigade, 10th Division, Army of the Ohio, to September 1862.
33rd Brigade, 10th Division, II Corps, Army of the Ohio, to November 1862.
1st Brigade, 5th Division, Center, XIV Corps, Army of the Cumberland, to January 1863.
1st Brigade, 5th Division, XIV Corps, Army of the Cumberland, to June 1863.
2nd Brigade, 4th Division, XIV Corps, to October 1863.
2nd Brigade, 3rd Division, XIV Corps, to July 1865.
The 105th Ohio Infantry mustered out of service at Washington, D.C., on June 3, 1865.
March to Nashville, Tenn., thence to Murfreesboro January 3–11, and duty there until June.
Passage of the Cumberland Mountains and Tennessee River and Chickamauga Campaign August 16-September 22.
Tunnel Hill, Buzzard's Roost Gap and Rocky Faced Ridge February 23–25.
Operations on line of Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills May 25-June 5.