The 197th Ohio Infantry Regiment lost 18 enlisted men to disease during the Civil War.

1865
March 28 Organized at Camp Chase, Ohio, and mustered in under Colonel Benton Halstead
April 25 Left State for Washington, D.C. Assigned to a Provisional Brigade, 9th Army Corps. Duty at Washington and Alexandria.
May 11 Moved to Dover, Del., and duty at Camp Harrington. Attached to 3rd Separate Brigade, 8th Army Corps, Middle Department.
May 31 Moved to Havre de Grace and assigned to duty as guard on line of the Philadelphia, Wilmington & Baltimore Railroad by Detachments
July 3 Moved to Baltimore, Md. and duty as guards at camps and hospitals around that city
July 31 Mustered out