The 135th Ohio Infantry Regiment lost 7 enlisted men killed or mortally wounded and 66 enlisted men to disease during the Civil War.
|Organized at Camp Chase, Ohio under Colonel Andrew Legg|
|May 11||Mustered in and left State for Cumberland, Md.|
|May-June||Assigned to duty as railroad guard on Baltimore & Ohio Railroad at North Mountain, Opequan Station and Martinsburg. A portion of the regiment was captured at North Mountain after five hours resistance against overwhelming force and sent to Confederate prison camps. Only about half these men survived.|
|July 4-7||Operations about Harper’s Ferry|
|July 3-7||Actions at Maryland Heights|
|July-August||Guard duty at Maryland Heights|
|September 1||Mustered out|