The 159th Ohio Infantry Regiment lost 10 enlisted men to disease during the Civil War.
|Organized at Zanesville, Ohio|
|May 9||Mustered in under Colonel Lyman J. Jackson|
|May 9||Left State for Harper’s Ferry, W. Va. At Maryland Height assigned to 3rd Separate Brigade, 8th Army Corps, Middle Department.|
|May 17||Guard duty in the Defenses of Baltimore, Md., and guarding bridges along Philadelphia, Wilmington & Baltimore Railroad by Detachments.|
A mounted detachment under Captain Edward H. Leib served with the cavalry at the battle.
|July 12||Expedition to Parkesville|
|July 28||Companies B, E, G and I served as railroad guard at Havre de Grace, Maryland.|
|August 13||Ordered home|
|August 24||Mustered out|