Federal Regiment

91st Pennsylvania Infantry

Commanding Officer on the Antietam Campaign:
Col. Edgar M. Gregory

This Regiment's Chain of Command:
  Army - Army of the Potomac
  Corps - Fifth Army Corps
  Division - 3rd Division, 5th Corps
  Brigade - 1st Brigade, 3rd Division, 5th Corps

Battlefield Tablets for this Unit

Tablet #19: Humphreys' Division, Fifth Army Corps - 14 Sep, 6 AM to 18 Sep, 7 AM
Tablet #33: Fifth Army Corps - 15 Sep, 2 PM to 16 Sep, 12 PM

We have one individual in the AotW database who was on the Maryland Campaign with this unit:

Co.	Rank	Name	Casualty?	Details*
F&S	Col	Gregory, Edgar Mantlebert

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