U.S. Army - Army of the Potomac

Fifth Army Corps

Brigadier General Fitz John Porter

First Division

Brigadier General George W. Morrell

First Brigade

Bde. Gen. J. H. Martindale (until 7/10)

Colonel James Barnes (after 7/10)

Second Brigade

Bde. Gen. Charles Griffin

Third Brigade

Brigadier General Daniel Butterfield

Second Division

Brigadier General George Sykes

First Brigade

Lt. Colonel R. C. Buchanan

Second Brigade

Lt. Colonel William Chapman

Third Brigade

Colonel G. K. Warren

Third Division

Brigadier General Truman Seymour

First Brigade

Colonel R. B. Roberts (until 7/5)

Colonel William Sinclair (after 7/5)

Second Brigade

Colonel A. L. Magilton

Third Brigade

Colonel C. F. Jackson

Artillery Reserve

1st Brigade Horse Artillery

2nd Brigade

3rd Brigade

4th Brigade

5th Brigade

Cavalry

4th Pennsylvania Cavalry Regiment

8th Illinois Cavalry Regiment