Army of the Potomac 
Major General George G. Meade
Dept. of Virginia & North Carolina 
Maj. Gen. J. G. Foster
Middle Department 
Major General Robert Schenck
New Jersey, Pennsylvania, Delaware, the eastern part of Maryland and the Eastern Shore of Virginia.
Dept. of Washington 
Maj. Gen. Samuel Heintzelman (to 10/13)
Maj. Gen. Christopher Augur (after 10/13)
District of Columbia, Arlington County in Virginia, and adjacent fortifications
Dept. of the Susquehanna 
Major Genral Darius Couch
The State of Pennsylvania east of Johnstown and Laurel Hill Mountain
Dept. of West Virginia 
Brigadier General Benjamin F. Kelly
West Virginia and Maryland west of the Alleghenies
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