U.S. Army - Army of the Potomac

Second Army Corps

Major General Edwin V. Sumner

First Division

Brigadier General I. B. Richardson (mw 9/17)

Brigadier General J. Caldwell (9/17)

Brigadier General W. S. Hancock (after 9/17)

1st Brigade

Brigadier General J. C. Caldwell

2nd Brigade

Bde. Gen. T. F. Meagher (except 9/17 - 9/18)

Colonel J. Burke (9/17 - 9/18)

3rd Brigade

Brigadier General W. H. French (untli 9/6)

Colonel J. R. Brooke (after 9/6)

Second Division

Brigadier General J. Sedgwick (w 9/17)

Brigadier General O. O. Howard (after 9/17)

1st Brigade

Brigadier General W. A. Gorman

2nd Brigade

Bde. Gen. Oliver O. Howard (until 9/17)

Colonel J. T. Owen (9/17)

Colonel DeWitt C. Baxter (after 9/17)

3rd Brigade

Colonel W. L. Tidball (until 9/7)

Brigadier General N. J. T. Dana (9/7 - 9/17)

Colonel Norman Hall (after 9/17)

Third Division

Brigadier General W. H. French

created 9/10

1st Brigade

Brigadier General Nathan Kimball

from Kimball's Independent Bde.

2nd Brigade

Colonel Dwight Morris

3rd Brigade

Brigadier General Max Weber (until 9/17)

Colonel J. W. Andrews (after 9/17)

Artillery Reserve

1st Rhode Island Artillery, Battery B

Captain John G. Hazard

1st Rhode Island Artillery, Battery G

Captain Charles D. Owen

to 3rd. Div. Artillery

1st New York Artillery, Battery G

to 3rd. Div. Artillery