The battery was attached to 6th Division, Army of the Tennessee, to June 1862.
Artillery, 4th Division, Right Wing, XIII Corps, Department of the Tennessee, to December 1862.
Artillery Reserve, District of Vicksburg, Mississippi, to August, 1865.
The 7th Ohio Battery mustered out of service at Camp Dennison on August 11, 1865.
Moved to St. Louis, Mo., March 18; then to Pittsburg Landing, Tenn., April 6.
March to Memphis, Tenn., via Grand Junction, Lagrange, and Holly Springs June 1-July 21.
Moved to Vicksburg November 11 and camp at Big Black until February 1864.