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Federal Corps

Twelfth (XII) Army Corps

 

Commanding Officers at Antietam:
  MGen Joseph K. F. Mansfield
  BGen Alpheus S. Williams

 

Members of Interest:
  Capt. Clarence H. Dyer, AAG

This Army Corps' Chain of Command:
  Army - Army of the Potomac


Units which make up this Army Corps:
  1st Division, XII Corps
  1st Michigan Cavalry, Company L
  2nd Division, XII Corps
  XII Corps Artillery

Battlefield Tablets for this Unit

Tablet #120: Army of the Potomac - 17 Sep, 5 AM to 17 Sep, 12 PM
Tablet #27: Twelfth Army Corps - 17 Sep, 6 AM to 17 Sep, 12 PM