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