United States Regiments & Batteries > Ohio

Organized at Columbus, Ohio
April 18 Mustered in under Colonel Lewis Wilson
April 19 Ordered to Washington, D.C. and duty in the defenses of that city attached to the Department of Washington
June Attached to Schenck’s Brigade, Tyler’s Division, McDowell’s Army of Northeast Virginia
June 20 Colonel Wilson resigned. Lieutenant Colonel Mason took command of the regiment
July 16-21 Advance on Manassas, Va.
July 17 Occupation of Fairfax Court House
July 21
Battle of Bull Run

Commanded by Lieutenant Colonel Mason.

July 31 Mustered out
Reorganized for three years service in the fall, and served in the western theater.