U.S. Army - Army of the Potomac

Twelfth Army Corps

Major General Joseph F. K. Mansfield (mw 9/17)

Brigadier General Alpheus Williams (after 9/17)

First Division

Bde. Gen. Alpheus Williams(until 9/17)

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

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

1st Brigade

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

Colonel J. F. Knipe (after 9/17)

3rd Brigade

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

Colonel Thomas H. Ruger (after 9/17)

Second Division

Bde. Gen. George S. Greene

1st Brigade

Colonel Charles Candy (except 9/17 - 9/18)

Lt. Colonel Hector Tyndale (w 9/17)

Major O. J. Crane (9/17 - 9/18)

2nd Brigade

Colonel T. B. Van Buren (until 9/15)

Colonel H. J. Stainrook (9/15 - 9/17)

Lt. Colonel J. C. Lane (after 9/17)

3rd Brigade

Colonel William B. Goodrich (k 9/17)

Lt. Colonel J. Austn (9/17 - 9/18)

Bde. Gen. George S. Greene (after 9/18)