United States Army >Army of the Potomac >12th Corps

September 1862 • to October >

Commanded by
Brigadier General Alpheus S. Williams (to 9/17)
Brigadier General Samuel W. Crawford (9/17)
Brigadier General George Gordon

Transferred from the 1st Division, 2nd Corps, Army of Virginia on September 12, 1862

First Brigade Brig. Gen. Samuel W. Crawford (to 9/17)
Colonel J. F. Knipe
5th Connecticut Infantry Regiment Captain Henry W. Daboll
10th Maine Infantry Regiment Colonel George L. Beal (w 9/17)
28th New York Infantry Regiment Captain William H. H. Mapes
46th Pennsylvania Infantry Regiment Colonel Joseph F. Knipe (^ 9/17)
Lt. Colonel J.L. Selfridge
124th Pennsylvania Infantry Regiment Colonel Joesph W. Hawley (w 9/17)
Major Isaac L. Haldeman
 from Defences Washington
125th Pennsylvania Infantry Regiment Colonel Jacob Higgins  from Defences Washington
128th Pennsylvania Infantry Regiment Colonel Samuel L. Croasdale (k 9/17)
Lt. Colonel William W. Hammersly (w 9/17)
Major Joel B. Wanner
 from Defences Washington
Third Brigade Brig. Gen. George H. Gordon
Colonel Thomas H. Ruger
20th Connecticut Infantry Regiment Colonel Samuel Ross from Connecticut 9/11
27th Indiana Infantry Regiment Colonel Silas Colgrove
2nd Massachusetts Infantry Regiment Colonel George L. Andrews
13th New Jersey Infantry Regiment Colonel Ezra A. Carman from New Jersey 9/1
107th New York Infantry Regiment Colonel Robert Van Valkenburgh from Def. Washington, Whipple’s Div.
29th Pennsylvania Infantry Regiment Captain Samuel M. Zulich from Def. Washington, Whipple’s Div.
3rd Wisconsin Infantry Regiment Colonel Thomas H. Ruger (^)
1st New York Artillery, Battery M Capt. George W. Cothran
4th United States Artillery, Battery F Lieutenant Edward D. Muhlenberg