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

Second Division

Brigadier General George S. Greene (to 10/15)

Brigadier General John W. Geary

First Brigade

Colonel Charles Candy (until 10/26)

Colonel Thomas H. Ruger

5th Ohio Infantry Regiment

7th Ohio Infantry Regiment

29th Ohio Infantry Regiment

66th Ohio Infantry Regiment

28th Pennsylvania Infantry Regiment

147th Pennsylvania Infantry Regiment

Lt. Colonel Ario Pardee

organized 10/10 at Loudon Heights

Second Brigade

Lt. Colonel J. C. Lane (until 10/28)

Bde. Gen. N. J. Jackson

3rd Maryland Infantry Regiment

Colonel Joseph M. Sudsburg (Col. 10/24)

102nd New York Infantry Regiment

to 3rd Bde. (see below)

109th Pennsylvania Infantry Regiment

Colonel Henry Stainrook

to 3rd Bde. (see below)

111th Pennsylvania Infantry Regiment

Colonel Matthew Schlaudecker

to 3rd Bde. (see below)

3rd Delaware Infantry Regiment

Colonel William O. Redden

from 3rd Bde. (see below)

Purnell Maryland Legion Infantry

from 3rd Bde. (see below)

60nd New York Infantry Regiment

from 3rd Bde. (see below)

140th New York Infantry Regiment

from 3rd Bde. (see below)

145th New York Infantry Regiment

from 3rd Bde. (see below)

Third Brigade

Bde. Gen. George S. Greene

1st District of Columbia Infantry Regt.

Colonel James A Tait

to Defences Washington, Dist. Alexandria

3rd Delaware Infantry Regiment

Colonel William O. Redden

to 2nd Bde. (see above)

Purnell Maryland Legion Infantry

to 2nd Bde. (see above)

60nd New York Infantry Regiment

to 2nd Bde. (see above)

78th New York Infantry Regiment

102nd New York Infantry Regiment

from 2nd Bde. (see above)

137th New York Infantry Regiment

from 1st Div. 4th Bde.

149th New York Infantry Regiment

from 1st Div. 4th Bde.

109th Pennsylvania Infantry Regiment

Colonel Henry Stainrook

from 2nd Bde. (see above)

111th Pennsylvania Infantry Regiment

Colonel Matthew Schlaudecker

from 2nd Bde. (see above)

Artillery

4th Maine Independent Battery

6th Maine Independent Battery

Pennsylvania Independent Battery E

Pennsylvania Independent Battery F