U.S. Army - Army of the Potomac

Second Army Corps

Major General Edwin V. Sumner (to 10/7)

Major General Darius N. Couch (after 10/7)

First Division

Brigadier General W. S. Hancock

1st Brigade

Brigadier General J. C. Caldwell

2nd Brigade

Brigadier General T. F. Meagher

3rd Brigade

Colonel J. R. Brooke (until 10/6)

Colonel S. K. Zook (after 10/6)

Second Division

Brigadier General O. O. Howard

1st Brigade

Bde. Gen. W. A. Gorman (until 10/29)

Bde. Gen. Alfred Sully (after 10/29)

2nd Brigade

Colonel DeWitt C. Baxter (until 10/10)

Brigadier General W. W. Burns (after 10/10)

3rd Brigade

Colonel Norman Hall

Third Division

Brigadier General W. H. French

1st Brigade

Brigadier General Nathan Kimball

2nd Brigade

Colonel Dwight Morris

3rd Brigade

Colonel J. W. Andrews

Artillery Reserve

1st Rhode Island Artillery, Battery B