Maj. Gen. George B. McClellan
Army of the Potomac
Brig. Gen. Edwin V. Sumner, Second in Command
III Army Corps
Brig. Gen. Samuel P. Heintzelman
2nd Division
Brig. Gen. Joseph Hooker
1st Brigade
Brig. Gen. Cuvier Grover
1st Massachusetts
Col. Robert Cowdin
11th Massachusetts
Col. William Blaisdell
2nd New Hampshire
Col. Gilman Marston
26th Pennsylvania
Col. William F. Small (w)
Maj. Casper M. Berry
2nd Brigade
Col. Nelson Taylor
70th New York
Col. William Dwight, Jr. (w,c)
Maj. Thomas Holt
72nd New York
Lieut. Col. Israel Moses
73rd New York
Col. William R. Brewster
74th New York
Lieut. Col. Charles H. Burtis
3rd Brigade
Brig. Gen. Francis E. Patterson
5th New Jersey
Col. Samuel H. Starr
6th New Jersey
Lieut. Col. John P. Van Leer (k)
Maj. George C. Burling
7th New Jersey
Lieut. Col. Ezra A. Carman (w)
Maj. Francis Price Jr.
8th New Jersey
Col. Adolphus J. Johnson (w)
Maj. Peter H. Ryerson (k)
Artillery
Maj. Charles S. Wainwright
1st New York
Capt. Thomas W. Osborn
4th New York
Capt. James E. Smith
6th New York
Capt. Walter M. Bramhall
Battery H, 1st U.S. Artillery
Capt. Charles H. Webber
3rd Division
Brig. Gen. Philip Kearny
1st Brigade
Brig. Gen. Charles D. Jameson
87th New York
Col. Stephen A. Dodge
57th Pennsylvania
Col. Charles T. Campbell
63rd Pennsylvania
Col. Alexander Hays
105th Pennsylvania
Col. Amor A. McKnight
2nd Brigade
Brig. Gen. David B. Birney
3rd Maine
Col. Henry G. Staples
4th Maine
Col. Elijah Walker
38th New York
Col. J. H. Hobart
40th New York
Col. Edward J. Riley
3rd Brigade
Brig. Gen. Hiram G. Berry
2nd Michigan
Col. Orlando M. Poe
3rd Michigan
Col. Stephen G. Champlin
5th Michigan
Col.Henry D. Terry
37th New York
Col. Samuel B. Hayman
Artillery
Capt. James Thompson
Battery B, 1st New Jersey
Capt. John E. Beam
Battery E, 1st Rhode Island
Capt. George E. Randolph
Battery G, 2nd U.S. Artillery
Capt. James Thompson
IV Army Corps
Brig. Gen. Erasmus D. Keyes
5th U.S. Cavaalry
Maj. Joseph H. Whittlesey
1st Division
Brig. Gen. Darius N. Couch
1st Brigade
Col. Julius W. Adams
65th New York (1st U.S. Chasseurs)
Lieut. Col. Alexander Shaler
67th New York (Long Island)
Lieut. Col. nelson Cross
23rd Pennsylvania
Col. Thomas H. Neill
31st Pennsylvania
Col. David H. Williams
61st Pennsylvania
Col. Oliver H. Rippey
2nd Brigade
Brig. Gen. John J. Peck
55th New York
Col. P. Regis de Trobriand
62nd New York
Col. John L. Riker
93rd Pennsylvania
Col. James M. McCarter
98th Pennsylvania
Col. John F. Ballier
102nd pennsylvania
Col. Thomas A.. Rowley
3rd Brigade
Brig. Gen. Charles Devens, Jr.
7th Massachusetts
Col. David A. Russell
10th Massachusetts
Col. Henry S. Briggs
2nd Rhode Island
Col. Frank Wheaton
Artillery
Maj. Robert M. West
Battery C, 1st Pennsylvania
Capt. Edward H. Flood
Battery E, 1st Pennsylvania
Capt. Theodore Miller
Battery H, 1st Pennsylvania
Capt. James Brady
2nd Division
Brig. Gen. William F. Smith
1st Brigade
Brig. Gen. Winfield S. Hancock
7th Maine
Col. Hiram Burnham
43rd New York
Col. Francis L. Vinton
49th Pennsylvania
Col. William H. Irwin
5th Wisconsin
Col. Amasa Cobb
2nd Brigade
Brig. Gen. W. T. H. Brooks
2nd Vermont
Col. Henry Whiting
3rd Vermont
Col. Breed N.Hyde
4th Vermont
Col. Edwin H. Stoughton
5th Vermont
Lieut. Col. Lewis A. Grant
6th Vermont
Col. Nathan Lord
3rd Brigade
(Temporarily under Hancock's command)
7th Maine
Col. Edwin C. Mason
33rd New York
Col. Robert F. Taylor
49th New York
Col. Daniel D. Bidwell
76th New York
Col. James B. McKean
Artillery
Capt. Romeyn B. Ayres
1st New York
Lieut. Andrew Cowan
3rd New York
Capt. Thaddeus P. Mott
Battery E, 1st New York
Capt. Charles C. Wheeler
Battery F, 5th U.S.
Capt. Romeyn B. Ayres
3rd Division
Brig. Gen. Silas Casey
1st Brigade
Brig. Gen. Henry M. Naglee
11th Maine
Col. John C. Caldwell
56th New York
Col. Charles H. Van Wyck
100th New York
Col. James M. Brown
52nd Pennsylvania
Col. John C. Dodge, Jr.
104th Pennsylvania
Col. W. W. H. Davis
2nd Brigade
Brig. Gen. William H. Keim
96th New York
Lieut. Col. Charles O. Gray
85th Pennsylvania
Col. Joshua B. Howell
101st Pennsylvania
Col. Joseph H. Wilsonj
103rd Maj. Audley W. Gazzam
3rd Brigade
Brig. Gen. Innis N. Palmer
81st New York
Lieut. Col. Jacob J. De Forest
85th new York
Col. Jonathan S. Belknap
92nd New York
Lieut. Col. Benjamin C. Burler
98th New York
Col. William Dutton
Arillery
Col. Guilford D. Bailey
7th New York
Capt. Peter C. Regan
8th New York
Capt. Butler Fitch
Battery A, 1st New York
Capt. Thomas H. Bates
Battery H, 1st New York
Capt. Joseph Spratt
Cavalry
8th Illinois
Col. John F. Farnsworth
McClellan (Illinois) Dragoons
Maj. Charles W. Barker
3rd Pennsylvania
Col. William M. Averell
1st U. S.
Lieut. Col. William N. Grier
6th U. S.
Maj. Lawrence Williams
Artillery
Lieut.Col. William Hays
Battery B & L, 2nd U.S.
Capt. James M. Robertson
Battery M, 2nd U.S.
Capt. Henry Benson
Battery C, 3rd U.S.
Capt. Horatio G. Gibson
Battery K, 3rd U.S.
Capt. John C. Tidball