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Commanding Officer on the Antietam Campaign:
Col. William H. Irwin
This Brigade's Chain of Command:
Army - Army of the Potomac
Corps - Sixth Army Corps
Division - 2nd Division, 6th Corps
Units which make up this Brigade:
7th Maine Infantry
20th New York Infantry
33rd New York Infantry
49th New York Infantry
77th New York Infantry
Maps Showing this Unit
Detail Map #10: Confederate Counterattacks in the Center (11 am-1 pm)
Detail Map #15: The Charge of the 7th Maine at Piper's Farm (5-5:30 pm)
Battlefield Tablets for this Unit
Tablet #75: Irwin's Brigade, Smith's Division - 17 Sep, 12 PM to 18 Sep, 12 PM
Tablet #120: Army of the Potomac - 17 Sep, 5 AM to 17 Sep, 12 PM
Tablet #102: Sixth Army Corps - 17 Sep, 5 AM to 17 Sep, 4 PM
Tablet #72: Smith's Division, Sixth Army Corps - 17 Sep, 5 AM to 19 Sep, 9 AM
Tablet #74: Irwin's Brigade, Smith's Division - 17 Sep, 6 AM to 19 Sep, 9 AM
Tablet #74, cont: Irwin's Brigade, Smith's Division - 17 Sep, 6 AM to 19 Sep, 9 AM
Tablet #121: Army of the Potomac - 17 Sep, 8 AM to 17 Sep, 6 PM