Battle of Seven Pines
Union Order of Battle
Army of the Potomac
Maj. Gen. George B. McClellan
Chief of Staff
Col. Randolph B. Marcy
General Headquarters
Maj. Granville O. Haller
Headquarters & Body Guards
4th U.S. Cavalry (2 companies)
Sturgis Rifles (Illinois)
Oneida (New York) Cavalry
Provost Gaurds
2nd U.S. Cavalry
8th U.S. (2 companies)
93rd New York (4 companies)
McClellan Dragoons (Illinois)
Chief of Engineers
Brig. Gen. John G. Barnard
Volunteers Engineer Brigade
Brig. Gen. Daniel P. Woodbury
15th New York Engineers
50th New York Engineers
U.S. Engineer Battalion (3 companies)
Capt. James C. Duane
II Corps
Brig. Gen. Edwin V. Sumner
First Division
Brig. Gen. Israel B. Richardson
1st Brigade
Brig. Gen. Oliver O. Howard (w)
Col. Thomas J. Parker
5th New Hampshire Infantry
Col. Edward E. Cross (w)
Lieut. Col. Samuel G. Langley
61st New York Infantry
Lieut. Col. William Massett (k)
64th New York Infantry
Lieut. Col. Daniel C. Bingham (w)
81st Pennsylvania Infantry
Col. James Miller (k)
Lieut. Col. Charles F. Johnson
2nd Brigade
Brig. Gen. Thomas F. Meagher
63rd New York Infantry
Col. John Burke
69th New York Infantry
Col. Robert Nugent
88th New York Infantry
Lieut. Col. Patrick Kelly
3rd Brigade
Brig. Gen. William H. French
52nd New York Infantry
Col. Paul Frank
57th New York Infantry
Col. Samuel K. Zook
66th New York Infantry
Col. Joseph C. Pinckney
53rd Pennsylvania Infantry
Col. John R. Brooke
Maj. Thomas Yeager (k)
Artillery
Capt. George W. Hazzard
Battery B, 1st New York Light Artillery
Capt. Rufus D. Pettit
Battery G, 1st New York Light Artillery
Capt. John D. Frank
Battery A, & Batter C, 4th U.S. Artillery
Capt. George W. Hazzard
Cavalry
6th New York Cavalry (company D)
Second Division
Brig. Gen. John Sedgwick
1st Brigade
Brig. Gen. Willis A. Gorman
15th Massachusetts Infantry
Col. John W. Kimball
1st Minnesota Infantry
Col. Alfred Sully
34th New York Infantry
Col. James A. Suiter
82nd New York Infantry
Lieut. Col. Henry W. Hudson
1st Company, Massachusetts Sharpshooters
Capt. John Saunders
2nd Company , Minnesota Sharpshooters
Capt. William F. Russell
2nd Brigade
Brig. Gen. William W. Burns
69th Pennsylvania Infantry
Col. Joshua T. Owen
71st Pennsylvania Infantry
Maj. Charles W. Smith
72nd Pennsylvania Infantry
Col. De Witt C. Baxter
106th Pennsylvania Infantry
Col. Turner G. Morehead
3rd Brigade
Brig. Gen. Napoleon J. T. Dana
19th Massachusetts Infantry
Col. Edward W. Hinks
20th Massachusetts Infantry
Col. W. Raymond Lee
7th Michigan Infantry
Col. Ira R. Grosvenor
Maj. John H. Richardson
42nd New York Infantry
Col. Edmund C. Charles
Artillery
Col. Charles H. Tompkins
Battery A, 1st Rhode Island Light Artillery
Capt. John A. Tompkins
Battery B, 1st Rhode Island Light Artillery
Capt. Walter O. Bartlett
Battery G, 1st Rhode Island Light Artillery
Capt. Charles D. Owen
Battery I, 1st U.S. Artillery
Lieut. Edmund Kirby
Cavalry
6th New York Cavalry (Company K)
Capt. Riley Johnston
III Corps
Brig. Gen. Samuel P. Heintzelman
Second Division
Brig. Gen. Joseph Hooker
1st Brigade
Brig. Gen. Cuvier Grover
1st Massachusetts Infantry
Maj. Charles P. Chandler
11th Massachusetts Infantry
Lieut. Col. Porter D. Tripp
2nd New Hampshire Infantry
Col. Gilman Marston
26th Pennsylvania Infantry
Maj. Casper M. Berry
2nd Brigade
Brig. Gen. Daniel Sickles
70th New York Infantry
Maj. Thomas Holt
71st New York Infantry
Col. George B. Hall
72nd New York Infantry
Col. Nelson Taylor
73rd New York Infantry
Maj. John D. Moriarty
Capt. Charles B. Elliott
74th New York Infantry
Col. Charles K. Graham
3rd Brigade
Brig. Gen. Francis E. Patterson
Col. Samuel H. Starr
5th New Jersey Infantry
Col. Samuel H. Starr
6th New Jersey Infantry
Col. Gershom Mott
7th New Jersey Infantry
Col. Joseph W. Revere
8th New Jersey Infantry
Col. Adolphus J. Johnson
Artillery
Maj. Charles S. Wainwright
Battery D, 1st New York Light Artillery
Capt. Thomas W. Osborn
4th New York Independent Battery
Capt. James E. Smith
6th New York Independent Battery
Capt. Walter M. Bramhall
Battery H, 1st U.S. Artillery
Lieut. Charles R. Eakin
Third Division
Brig. Gen. Philip Kearny
1st Brigade
Brig. Gen. Charles D. Jameson (w)
87th New York Infantry
Col. Stephen A. Dodge (w)
Lieut. Col. Richard A. Bachia
57th Pennsylvania Infantry
Col. Charles T. Campbell (w)
Lieut. Col. E. W. Woods
Maj. Jeremiah Culp (k)
63rd Pennsylvania Infantry
Col. Alexander Hays
Lieut. Col. Algernon S. M. Morgan (w)
105th Pennsylvania Infantry
Col. Amor A. McKnight (w)
2nd Brigade
Brig. Gen. David B. Birney
Col. J. H. Hobart Ward
3rd Maine Infantry
Col. Henry G. Staples
4th Maine Infantry
Col. Elijah Walker
38th New York Infantry
Col. J. H. Hobart Ward
40th New York Infantry
Col. Edward J. Riley (w)
Lieut. Col. Thomas W. Egan
3rd Brigade
Brig. Gen. Hiram G. Berry
2nd Michigan Infantry
Col. Orlando M. Poe
Lieut. Col. Adolphus Williams (w)
3rd Michigan Infantry
Col. Stephen G. Champlin (w)
5th Michigan Infantry
Col. Henry D. Terry
37th New York Infantry
Col. Samuel B. Hayman
Artillery
Capt. James Thompson
Battery B, New Jersey Light Artillery
Capt. Adoniram J. Clark
Battery E, 1st Rhode Island Light Artillery
Lieut. John K. Bucklyn
Battery G, 2nd U.S. Artillery
Lieut. John H. Butler
Cavalry
3rd Pennsylvania Cavalry
Col. William W. Averell
IV Corps
Brig. Gen. Erasmus D. Keyes
First Division
Brig. Gen. Darius N. Couch
1st Brigade
Brig. Gen. John J. Peck
55th New York Infantry
Lieut. Col. Louis Thourot
62nd New York
Col. J. Lafayette Riker (k)
Lieut. Col. David J. Nevin
93rd Pennsylvania Infantry
Col. J. M. McCarter (w)
Capt. John E. Arthur
102nd Pennsylvania Infantry
Col. Thomas A. Rowley (w)
Lieut. Col. J. M. Kinkead
2nd Brigade
Brig. Gen. John J. Abercrombie
65th New York Infantry
Col. John Cochrane
67th New York Infantry
Col. Julius W. Adams (w)
Lieut. Col. Nelson Cross
23rd Pennsylvania Infantry
Col. Thomas H. Neill
Lieut. Col. John Ely (w)
61st Pennsylvania Infantry
Col. Oliver H. Rippey (k)
Capt. Robert L. Orr
3rd Brigade
Brig. Charles Devens (w)
Col. Charles H. Innes
7th Massachusetts Infantry
Col. David A. Russell
10th Massachusetts Infantry
Col. Henry S. Briggs (w)
Capt. Orzo Miller
36th New York Infantry
Lieut. Col. D. E. Hungerford
Artillery
Maj. Robert M. West
Battery C, 1st Pennsylvania Light Artillery
Capt. Jeremiah McCarthy
Battery D, 1st Pennsylvania Light Artillery
Capt. Edward H. Flood
Battery E, 1st Pennsylvania Light Artillery
Capt. Theodore Miller
Battery H, 1st Pennsylvania Light Artillery
Capt James Brady
Cavalry
6th New York Cavalry (company F)
Second Division
Brig. Gen. Silas Casey
1st Brigade
Brig. Gen. Henry M. Naglee
11th Maine Infantry
Col. Harris M. Plaisted
56th New York Infantry
Lieut. Col. James Jourdan
100th New York Infantry
Col. James M. Brown (k)
52nd Pennsylvania Infantry
Col. John C. Dodge, Jr.
104th Pennsylvania Infantry
Col. W. W. H. Davis (w)
Lieut. Col. John W. Nields (w)
Maj. John M. Gries (m, w)
2nd Brigade
Brig. Gen. Henry W. Wessells
96th New York Infantry
Col. James Fairman
85th Pennsylvania Infantry
Col. Joshua B. Howell
101st Pennsylvania Infantry
Lieut. Col. David B. Morris (w)
103rd Pennsylvania Infantry
Maj. A. W. Gazzam
3rd Brigade
Brig. Gen. Innis N.Palmer
81st New York Infantry
Lieut. Col. Jacob J. DeForest (w)
Capt. W. C. Raulston
85th New York Infantry
Col. Jonathan S. Belknap
92nd New York Infantry
Col. Lewis C. Hunt (w)
Lieut. Col. Hiram Anderson, Jr.
98th New York Infantry
Lieut. Col. Charles Durkee
Artillery
Col. Guilford D. Bailey (k)
Maj. D. H. Van Valkenburgh (k)
Capt. Peter C. Regan
Battery A, 1st New York Light Artillery
Lieut. George P. Hart
Battery H, 1st New York Light Artillery
Capt. Joseph Spratt (w)
Lieut. Charles E. Mink
7th New York Independent Battery
Capt. Peter C. Regan
8th New York Independent Battery
Capt. Butler Fitch
Cavalry
6th New York Cavalry (Company B)
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8th Pennsylvania Cavalry
Col. David M. Gregg