The Civil War in the East

U.S. Army - Army of the Potomac - Twelfth Army Corps

First Division

Brigadier General Alpheus Williams(until 9/17)

Brigadier General Samuel W. Crawford (w 9/17)

Brigadier General George Gordon

 

         
   
   
Battle of Antietam

First Brigade

Bde. Gen. Samuel W. Crawford (until 9/17)

Colonel Joseph F. Knipe

 

5th Connecticut Infantry Regiment

Captain Henry W. Daboll

from Army Va., 2nd Corps, 1st Div., 1st Bde.

10th Maine Infantry Regiment

Colonel George L. Beale (w 9/17)

from Army Va., 2nd Corps, 1st Div., 1st Bde.

28th New York Infantry Regiment

Captain William H. H. Mapes

from Army Va., 2nd Corps, 1st Div., 1st Bde.

46th Pennsylvania Infantry Regiment

Colonel Joseph F. Knipe (until 9/17)

Lieutenant Colonel Selfridge

from Army Va., 2nd Corps, 1st Div., 1st Bde.

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

Bde. Gen. George Gordon (until 9/17)

Colonel Thomas H. Ruger

 

20th Connecticut Infantry Regiment

 

from Connecticut 9/11

27th Indiana Infantry Regiment

Colonel Silas Colgrove

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

2nd Massachusetts Infantry Regiment

Colonel George L. Andrews

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

13th New Jersey Infantry Regiment

Colonel Ezra A. Carman

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

107th New York Infantry Regiment

Colonel Robert Van Valkenburgh

from Def. Washington, Whipple's Div.

29th Pennsylvania Infantry Regiment

Colonel John K. Murphy

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

Pennsylvania Zouaves d'Afrrique

Captain Charles H.T. Collis

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

transferred to 114th Pennsylvania Infantry

3rd Wisconsin Infantry Regiment

Colonel Thomas Ruger

from Army Va., 2nd Corps, 1st Div., 3rd Bde.

Artillery

   

1st New York Artillery, Battery K

 

 

1st New York Artillery, Battery M

Captain George W. Cothran

 

10th New York Independent Battery

Captain John T. Bruen

 

4th United States Artillery, Battery F

Lieutenant Edward D. Muhlenberg

to 3rd Corps, 3rd Div. Artillery