[CENTER][SIZE="7"][color="Blue"]UNION[/color][/size][/CENTER]
[SIZE="6"]THE ARMY OF THE POTOMAC[/size]
Major General George B. McClellan, USA, commanding
Headquarters Guard
Companies B, C, H, & I, 1st United States Cavalry|93rd New York Infantry Regiment
Major Granville O. Holler
Headquarters Cavalry Escort, Army of the Potomac
Company A, 4th United States Cavalry|Company E, 4th United States Cavalry|Independent Company, Oneida (NY) Cavalry
Commanding Officer:
James B McIntyre
Regular Engineer Battalion
Commanding Officer:
Captain James C. Duane
Volunteer Engineer Brigade, Army of the Potomac
15th New York Engineers|50th New York Engineers
Commanding Officer:
Brigadier General Daniel P Woodbury
Provost Guard
4 Companies, 2nd U.S. Cavalry|4 Companies, 8th U.S. Infantry |Company "G", 19th U.S. Infantry|Company "H", 19th U.S. Infantry
Commanding Officer:
Major William H. Wood
[SIZE="5"]First (I) Army Corps[/size]
Commanding Officers:
Joseph Hooker
George Gordon Meade
[SIZE="4"]1st Division, I Corps[/size]
Commanding Officers:
Rufus King
John Porter Hatch
Abner Doubleday
1st Brigade, 1st Division, I Corps
Commanding Officer:
Walter Phelps
22nd New York Infantry
24th New York Infantry
2nd United States Sharpshooters
30th New York Infantry
84th New York Infantry/14th Brooklyn
1st Division, I Corps Artillery
Commanding Officer:
J Albert Monroe
1st New York Light Artillery, Battery L
1st Rhode Island Light Artillery, Battery D
4th United States Artillery, Battery B
New Hampshire Light Artillery, First Battery
2nd Brigade, 1st Division, I Corps
Commanding Officers:
Abner Doubleday
William P Wainwright
J William Hofmann
56th Pennsylvania Infantry
76th New York Infantry
7th Indiana Infantry
95th New York Infantry
3rd Brigade, 1st Division, I Corps
Commanding Officer:
Marsena Rudolph Patrick
21st New York Infantry
23rd New York Infantry
35th New York Infantry
80th New York Infantry/20th NYS Militia
4th Brigade, 1st Division, I Corps
"Black Hats"
Commanding Officer:
John Gibbon
19th Indiana Infantry
2nd Wisconsin Infantry
6th Wisconsin Infantry
7th Wisconsin Infantry
[SIZE="4"]2nd Division, I Corps[/size]
Commanding Officer:
James Brewerton Ricketts
1st Brigade, 2nd Division, I Corps
Commanding Officer:
BGen. Abram Duryee
104th New York Infantry
105th New York Infantry
107th Pennsylvania Infantry
97th New York Infantry
2nd Brigade, 2nd Division, I Corps
Commanding Officers:
Col. William A. Christian
Col. Peter Lyle
26th New York Infantry
88th Pennsylvania Infantry
90th Pennsylvania Infantry
94th New York Infantry
2nd Division, I Corps Artillery
1st Pennsylvania Light Artillery, Battery F
Independent Battery, Pennsylvania Light Artillery
3rd Brigade, 2nd Division, I Corps
Commanding Officers:
BGen. George L. Hartsuff
Col. Richard Coulter
11th Pennsylvania Infantry
12th Massachusetts Infantry
13th Massachusetts Infantry
16th Maine Infantry
83rd New York Infantry (9th Militia)
[SIZE="4"]3rd Division, I Corps[/size]
Commanding Officers:
BGen George Gordon Meade
BGen Truman Seymour
1st Brigade, 3rd Division, I Corps
Commanding Officer:
Truman Seymour
13th Pennsylvania Reserves (1st Rifles)
1st Pennsylvania Reserves
2nd Pennsylvania Reserves
5th Pennsylvania Reserves
6th Pennsylvania Reserves
2nd Brigade, 3rd Division, I Corps
Commanding Officers:
Col. Henry C. Bolinger
Col. Albert L. Magilton
3rd Pennsylvania Reserves
4th Pennsylvania Reserves
7th Pennsylvania Reserves
8th Pennsylvania Reserves
3rd Brigade, 3rd Division, I Corps
Commanding Officers:
Col. Thomas F. Gallagher
LCol. Robert Anderson
10th Pennsylvania Reserves
11th Pennsylvania Reserves
12th Pennsylvania Reserves
9th Pennsylvania Reserves
3rd Division, I Corps Artillery
1st Pennsylvania Light Artillery, Battery A
1st Pennsylvania Light Artillery, Battery B
1st Pennsylvania Light Artillery, Battery G
5th United States Artillery, Battery C
Companies A, B, I, & K, 2nd New York Cavalry
Commanding Officer:
John E Naylor