United States Army


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Commanded by Major General John Pope

First Corps Major General Franz Siegel 
First Division Brigadier General Robert Schenck (w 8/30)
Brigadier General Julius Stahel
Second Division Brigadier General A. Von Steinwehr
Third Division Brigadier General Carl Schurz
Milroy’s Independent Brigade Brigadier General R. Milroy
Cavalry Brigade Colonel John Beardsley
Second Corps Major General Nathaniel P. Banks
First Division Brigadier General Alpheus Williams
Second Division Brigadier General C. C. Augur (to 8/9)
Brigadier General Henry Prince (c 8/9)
Brigadier General George S. Greene
Cavalry Brigade Brigadier General John Buford
Third Corps Major General Irvin McDowell
First Division Brigadier General Rufus King (to 8/28)
Brigadier General J. F. Hatch (8/28 – 8/30)
Brigadier General Abner Doubleday 
Second Division Brigadier General John B. Ricketts
Third Division Brigadier General John F. Reynolds from Army Potomac, 5 Corps, 8/25