66th Pennsylvania Infantry Regiment

1861

July - August

Organized at Philadelphia as 30th Pennsylvania Volunteers

September

Designation changed to 66th Pennsylvania Infantry Regiment

September 20

Moved to Washington, D.C. Attached to Abercrombie's Brigade, Banks' Division, Army Potomac

October-February

Duty on the Upper Potomac at Frederick, Md.

October 21-24

Operations on the Potomac

1862

February

Ordered to Washington, D.C.

March 1

Consolidated with 73rd and 99th Pennsylvania Volunteers