Federal Brigade

1st Brigade, 1st Division, 4th Corps

Commanding Officer on the Antietam Campaign:
  BGen Charles Devens, Jr.

Members of Interest:
  Surg. Charles O'Leary

This Brigade's Chain of Command:
  Army - Army of the Potomac
  Division - 1st Division, 4th Corps

Units which make up this Brigade:
  10th Massachusetts Infantry
  7th Massachusetts Infantry
  36th New York Infantry
  2nd Rhode Island Infantry