Seven Days Battles order of battle: Union

The following United States Army units and commanders fought in the Seven Days battles of the American Civil War. The Confederate order of battle is listed separately.

Abbreviations Used

Military Rank

• MG = Major General
• BG = Brigadier General
• Col = Colonel
• Ltc = Lieutenant Colonel
• Maj = Major
• Cpt = Captain
• Lt = Lieutenant
• Sgt = Sergeant
• ADC = Aide de Camp

Other

• (w) = wounded
• (mw) = mortally wounded
• (k) = killed in action
• (c) = captured
• (w & c) = wounded and captured
• (mw & c) = mortally wounded and captured

Army of the Potomac

General Staff and Headquarters

MG George B. McClellan, Commanding

Brigade	Regiments and Others
Volunteer Engineer Brigade	15th New York 50th New York Battalion United States Engineers

Brigade	Regiments and Others
Provost Marshall Troops	2nd United States Cavalry (Companies) McClellan Dragoons (2 Companies) 93rd New York (4 Companies) Sturges Rifles 8th United States (2 Companies)

Brigade	Regiments and Others
Escort	4th United States Cavalry (2 Companies) Oneida New York Cavalry

I Corps (Not Present at the Battle)

BG Irvin McDowell

• I Corps Cavalry
  • 1st New Jersey Cavalry
  • 1st Pennsylvania Cavalry
  • 1st Pennsylvania Rifles Battalion (4 Companies)

Division	Brigade	Regiments and Others
First Division	1st Brigade	14th Indiana 4th Ohio 8th Ohio 7th West Virginia
	2nd Brigade	39th Illinois 13th Indiana 62nd Ohio 67th Ohio
	3rd Brigade	5th Ohio 7th Ohio 29th Ohio 66th Ohio
	4th Brigade	7th Indiana 84th Pennsylvania 110th Pennsylvania 1st West Virginia
	Artillery	Company H 1st Ohio Company L 1st Ohio Company E 4th United States Company A West Virginia Company B West Virginia
	Cavalry	1st Ohio (1 Company) 1st Rhode Island Battalion
Second Division      BG James B. Ricketts	1st Brigade	26th New York 94th New York 88th Pennsylvania 90th Pennsylvania
	2nd Brigade	97th New York 104th New York 105th New York 107th Pennsylvania
	3rd Brigade	12th Massachusetts 13th Massachusetts 11th Pennsylvania 83rd New York
	Artillery	2nd Maine 5th Maine Company C Pennsylvania Company F 1st Pennsylvania
	Cavalry	1st Maine (7 Companies) 1st Rhode Island (detachment)
Third Division      BG Rufus King	1st Brigade	22nd New York 24th New York 30th New York 84th New York 2nd United States Sharpshooters
	2nd Brigade	21st New York 23rd New York 35th New York 80th New York
	3rd Brigade	19th Indiana 2nd Wisconsin 6th Wisconsin 7th Wisconsin
	4th Brigade	76th New York 95th New York 56th Pennsylvania
	Artillery	Company G 1st New Hampshire Company B 2nd Battalion New York Arty. Company D Pennsylvania Company D 1st Rhode Island Company B 4th United States
	Cavalry	2nd New York Cavalry (8 Companies)

II Corps

BG Edwin Vose Sumner

• II Corps Cavalry
  • Companies D,F,H and K 6th New York Cavalry

Division	Brigade	Regiments and Others
First Division      BG Israel B. Richardson	1st Brigade	5th New Hampshire 7th New York 61st New York 81st Pennsylvania
	2nd Brigade BG Thomas F. Meagher	29th Massachusetts Col. Ebenezer W. Pierce (w) 63rd New York Col. John Burke 69th New York Col. Robert Nugent 88th New York Lt. Col Patrick Kelly
	3rd Brigade Col. John R. Brooke	2nd Delaware 52nd New York 57th New York 64th New York 66th New York 53rd Pennsylvania
	Artillery	Company B 1st New York Company G 1st New York Companies A and C 4th United States
Second Division      BG John Sedgwick	1st Brigade	15th Massachusetts (Massachusetts Sharpshooters 1st Company attached) 1st Minnesota (Minnesota Sharpshooters 2nd Company attached) 34th New York 82nd New York
	2nd Brigade	69th Pennsylvania 71st Pennsylvania 72nd Pennsylvania 106th Pennsylvania
	3rd Brigade	19th Massachusetts 20th Massachusetts 7th Michigan 42nd New York
	Artillery	Company A 1st Rhode Island Company I 1st United States
II Corps Artillery Reserve	Company G 1st New York Company B 1st Rhode Island Company G 1st Rhode Island

III Corps

BG Samuel P. Heintzelman

• III Corps Cavalry
  • 3rd Pennsylvania Cavalry

Division	Brigade	Regiments and Others
First Division      BG Joseph Hooker	1st Brigade	1st Massachusetts 11th Massachusetts 16th Massachusetts 2nd New Hampshire 26th Pennsylvania
	2nd Brigade	70th New York 71st New York 72nd New York 73rd New York 74th New York
	3rd Brigade	5th New Jersey 6th New Jersey 7th New Jersey 8th New Jersey 2nd New York
	Artillery	Company D 1st New York 4th New York Company H 1st United States
Second Division      BG Philip Kearny	1st Brigade	20th Indiana 87th New York 57th Pennsylvania 63rd Pennsylvania 105th Pennsylvania
	2nd Brigade	3rd Maine 4th Maine 38th New York 40th New York 101st New York
	3rd Brigade	2nd Michigan 3rd Michigan 5th Michigan 1st New York 37th New York
	Artillery	Company E 1st Rhode Island Company G 2nd United States
III Corps Artillery Reserve	6th New York 2nd Battery "B" New Jersey Volunteer Light Artillery Company K 4th United States

IV Corps

BG Erasmus D. Keyes

• IV Corps Cavalry
  • 8th Pennsylvania Cavalry

Division	Brigade	Regiments and Others
First Division      BG Darius N. Couch	1st Brigade	55th New York 62nd New York 93rd Pennsylvania 98th Pennsylvania 102nd Pennsylvania
	2nd Brigade	65th New York 67th New York 23rd Pennsylvania 31st Pennsylvania 61st Pennsylvania
	3rd Brigade	7th Massachusetts 10th Massachusetts 36th New York 2nd Rhode Island
	Artillery	Company C 1st Pennsylvania Company D 1st Pennsylvania
Second Division      BG John J. Peck	1st Brigade	11th Maine 56th New York 100th New York 52nd Pennsylvania 104th Pennsylvania
	2nd Brigade	81st New York 85th New York 92nd New York 96th New York 98th New York 85th Pennsylvania 101st Pennsylvania 103rd Pennsylvania
	Artillery	Company H 1st New York
IV Corps Artillery Reserve	8th New York Company E 1st Pennsylvania Company H 1st Pennsylvania Company M 5th United States

V Corps

BG Fitz John Porter

• V Corps Cavalry
  • 8th Illinois Cavalry

Division	Brigade	Regiments and Others
First Division      BG George W. Morell	1st Brigade	2nd Maine 18th Massachusetts 22nd Massachusetts 1st Michigan 13th New York 25th New York 2nd Company Massachusetts Sharpshooters
	2nd Brigade	9th Massachusetts 4th Michigan 14th New York 62nd Pennsylvania
	3rd Brigade	12th New York 17th New York 44th New York 16th Michigan (Michigan Sharpshooters Brady's Company attached) 83rd Pennsylvania
	Artillery	3rd Massachusetts 5th Massachusetts Company C 1st Rhode Island Company D 5th United States
	Sharpshooters	1st United States Sharpshooters
Second Division      BG George Sykes	1st Brigade	3rd United States 4th United States 12th United States 14th United States
	2nd Brigade	2nd United States 6th United States 10th United States 11th United States 17th United States
	3rd Brigade	5th New York 10th New York
	Artillery	Companies L and M 3rd United States Company I 5th United States
Third Division      BG George A. McCall	1st Brigade	1st Pennsylvania Reserves 2nd Pennsylvania Reserves (8 Companies) 5th Pennsylvania Reserves 8th Pennsylvania Reserves 13th Pennsylvania Reserves (6 Companies)
	2nd Brigade	3rd Pennsylvania Reserves 4th Pennsylvania Reserves 7th Pennsylvania Reserves 11th Pennsylvania Reserves
	3rd Brigade	6th Pennsylvania Reserves 9th Pennsylvania Reserves 10th Pennsylvania Reserves 12th Pennsylvania Reserves
	Artillery	Company A 1st Pennsylvania Company B 1st Pennsylvania Company G 1st Pennsylvania Company C 5th United States
	Division Cavalry	4th Pennsylvania Cavalry

VI Corps

BG William B. Franklin

• VI Corps Cavalry
  • 1st New York Cavalry

Division	Brigade	Regiments and Others
First Division      BG Henry Warner Slocum	1st Brigade	1st New Jersey 2nd New Jersey 3rd New Jersey 4th New Jersey
	2nd Brigade	5th Maine 16th New York 27th New York 96th Pennsylvania
	3rd Brigade	18th New York 31st New York 32nd New York 95th Pennsylvania
	Artillery	1st Massachusetts 1st New Jersey Company D 2nd United States
Second Division      BG William Farrar Smith	1st Brigade	6th Maine 43rd New York 49th Pennsylvania 5th Wisconsin
	2nd Brigade	2nd Vermont 3rd Vermont 4th Vermont 5th Vermont 6th Vermont
	3rd Brigade	7th Maine 20th New York 33rd New York 49th New York 77th New York
	Artillery	Company E 1st New York 1st New York 3rd New York Company F 5th United States
	Cavalry	Companies I and K 5th Pennsylvania Cavalry

Reserve forces

Division	Brigade	Regiments and Others
Artillery Reserve
	First Brigade (Horse Artillery)	Company A 2nd United States Companies B and L 2nd United States Company M 2nd United States Companies C and G 3rd United States
	Second Brigade	Companies E and G 1st United States Company K 1st United States Company G 4th United States Company A 5th United States Company K 5th United States
	Third Brigade	Company A 1st New York Company B 1st New York Company D 1st New York
	Fourth Brigade	Company A 1st Maryland Company B 1st Maryland
	Fifth Brigade	5th New York Company E 2nd United States Company F and K 3rd United States
	Siege Train	Companies A,B,C,D,E,F,G,H,I and K 1st Connecticut Heavy Artillery

Division	Brigade	Regiments and Others
Cavalry Reserve      BG Philip St. George Cooke
	First Brigade	6th Pennsylvania Cavalry 5th United States Cavalry
	Second Brigade	1st United States Cavalry 6th United States Cavalry

Brigade	Regiments and Others
Casey's Command (at White House Landing)      BG Silas Casey	4th Pennsylvania Cavalry (Squadron) 11th Pennsylvania Cavalry (5 Companies) 1st New York Artillery 93rd New York (6 Companies)

References

• Seven Days Order of Battle