United States Army

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Commanded by Major General George B. McClellan

In August of 1862 the Pennsylvania Reserves Division was transferred from the 5th Corps to Pope’s Army of Virginia.

Second Corps Major General Edwin V. Sumner
First Division Brig. Gen. George Stoneman (to 8/15)
Brig. Gen. Israel B. Richardson
Second Division Brig. Gen. John Sedgwick
Third Corps Major General Samuel P. Heintzelman 
Third/First Division Brig. Gen. Philip Kearney Redesignated from 3rd Division 8/5
Second Division Brig. Gen. Joseph Hooker
Fourth Corps Brigadier General Erasmus Keyes
First Division Brig. Gen. John J. Abercrombie (to 8/12)
Brig. Gen. Darius N. Couch
Second Division Brig. Gen. Silas Casey
Fifth Corps Major General Fitz John Porter
First Division Brig. Gen. George W. Morrell
Second Division Brig. Gen. George Sykes
Third Division Brig. Gen. Truman Seymour to Army Virginia – 3 Corps 8/26
Artillery Reserve Colonel Henry Hunt
Sixth Corps Major General William B. Franklin
First Division Brig. Gen. Henry Slocum
Second Division Brig. Gen. William F. Smith
Ninth Corps Major General Ambrose E. Burnside
First Division Brig. Gen. Israel I. Stevens
Second Division Brig. Gen. William Jesse Reno
Third Division Brig. Gen. John G. Parke
Cavalry Division Brigadier General George Stoneman (after 8/15)
First Brigade Colonel W. W. Averill
Second Brigade Brig. Gen. Alfred Pleasonton