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Commanded by Major General George B. McClellan

Headquarters
Banks’ Division Major General Nathaniel P. Banks
1st Brigade Brig. Gen. Alpheus Williams
2nd Brigade Brig. Gen. J. Abercrombie
3rd Brigade Brig. Gen. C. S. Hamilton
Blenker’s Division Brig. Gen. L. Blenker
1st Brigade Gen. Julius H. Stahel
2nd Brigade Brig. Gen. A. Von Steinwehr
3rd Brigade Brig. Gen. H. Bohlen
Casey’s Division Brigadier General Silas Casey
1st Brigade Colonel William W.H. Davis
2nd Brigade Brig. Gen. William Keim
3rd Brigade Brig. Gen. Innis N. Palmer
Dix’s Division Major General John Dix
Franklin’s’s Division Brig. Gen. W. B. Franklin
1st Brigade Brig. Gen. P. Kearney
2nd Brigade Brig. Gen. H. P. Slocum
3rd Brigade Brig. Gen. J. Newton
Heintzelman’s Division  Brig. Gen. Samuel P. Heintzelman
1st Brigade Brig. Gen. Israel B. Richardson
2nd Brigade Brig. Gen. John Sedgwck
3rd Brigade Brig. Gen. Charles D. Jameson
Hooker’s Division Brig. Gen. Joseph Hooker
1st Brigade Brig. Gen. H. M. Naglee
2nd Brigade Brig. Gen. Daniel E. Sickles
3rd Brigade Colonel S. H. Starr
Keyes’ Division Bde. Gen. E. D. Keyes
1st Brigade Brig. Gen. D. N. Couch
2nd Brigade Brig. Gen. L. P. Graham
3rd Brigade Brig. Gen. J. J. Peck
Lander’s Division Brig. Gen. Frederick W. Lander
1st Brigade Colonel Nathan Kimball
2nd Brigade Colonel J. C. Sullivan
3rd Brigade Brig. Gen. Erasmus B. Tyler
McCall’s’s Division Brig. Gen. George McCall
1st Brigade Brig. Gen. John Reynolds
2nd Brigade Brig. Gen. G. Meade
3rd Brigade Brig. Gen. Edward O. C. Ord
McDowell’s Division Brig. Gen. Irwin McDowell
1st Brigade Brig. Gen. C. C. Augur
2nd Brigade Brig. Gen. John S. Wadsworth
3rd Brigade Brig. Gen. Rufus King
Porter’s Division Brig. Gen. Fitz John Porter
1st Brigade Brig. Gen. George W. Morrell
2nd Brigade Brig. Gen. John H. Martindale
3rd Brigade Brig. Gen. Daniel Butterfield
Smith’s Division Brig. Gen. William F. Smith
1st Brigade Brig. Gen. W. T. H. Brooks
2nd Brigade Brig. Gen. J. W. Davidson
3rd Brigade Brig. Gen. W. S. Hancock
Stone’s Division Brig. Gen. Charles P. Stone
1st Brigade Brig. Gen. W. Gorman
2nd Brigade Brig. Gen. N. J. T. Dana 
3rd Brigade Brig. Gen. W. W. Burns
Sumner’s Division Brig. Gen. Edwin V. Sumner
1st Brigade Brig. Gen. O. O. Howard
2nd Brigade Brig. Gen. T. F. Meagher
3rd Brigade Brig. Gen. W. H. French
Artillery Reserve Colonel Henry K. Hunt
Cavalry Reserve Brig. Gen. Philip St. George Cooke