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Union Army
Battle of Antietam
17 September 1862
Army of the Potomac
Commanding General: Major General George B. McClellan
General Headquarters Escort: Captain J.B.McIntyre
Independent Company, Oneida (New York) Cavalry
A-E/4th U.S.Cavalry Regiment
Engineer Battalion
A-D-F-G/8th U.S. Infantry Regiment
G-H/19th U.S. Infantry Regiment
Provost Guard
E-F-H-K/2nd U.S. Cavalry Regiment
Headquarters Guard: Major G.O.Haller
93rd New York Regiment
Quartermaster's Guard: Captain M.A.Reno
B-C-H-I/1st U.S. Cavalry Regiment
I Army Corps: Major General Joseph Hooker
Chief of Staff: Brigadier General George G. Meade
Escort: Captain J.E. Naylor
A-B-I-K/2nd New York Cavalry Regiment
1st Division: Brigadier General R.King (Relieved 9/14)
Brigadier General J.P.Hatch (Wounded 9/14)
Brigadier General A. Doubleday
1st Brigade: Colonel W. Phelps
22nd New York Regiment
24th New York Regiment
30th New York Regiment
84th New York Regiment
2nd U.S. Sharpshooters
2nd Brigade: Brigadier General A. Doubleday
7th Indiana Regiment
76th New York Regiment
95th New York Regiment
56th Pennsylvania Regiment
3rd Brigade: Brigadier General M.R.Patrick
21st New York Regiment
23rd New York Regiment
35th New York Regiment
80th New York Regiment (20th Militia)
Brigade: Brigadier General J. Gibbon
19th Indiana Regiment
2nd Wisconsin Regiment
6th Wisconsin Regiment
7th Wisconsin Regiment
Artillery: Captain J.A.Monroe
1st New Hampshire Light Battery
1st Rhode Island Light Artillery, Battery D
1st New York Light Artillery, Battery L
4th U.S. Artillery, Battery B
2nd Division: Brigadier General J.B. Ricketts
1st Brigade: Brigadier General A.Duryea
97th New York Regiment
104th New York Regiment
105th New York Regiment
107th Pennsylvania Regiment
2nd Brigade: Colonel W.A.Christian
26th New York Regiment
94th New York Regiment
88th Pennsylvania Regiment
90th Pennsylvania Regiment
3rd Brigade: Brigadier General G.L.Hartsuff
16th Maine Regiment
12th Massachusetts Regiment
13th Massachusetts Regiment
83rd New York Regiment
11th Pennsylvania Regiment
Artillery:
1st Pennsylvania Light Artillery, Battery C
1st Pennsylvania Light Artillery, Battery F
3rd Division: Brigadier General George G. Meade
1st Brigade: Brigadier General T. Seymour
1st Pennsylvania Reserves
2nd Pennsylvania Reserves
5th Pennsylvania Reserves
6th Pennsylvania Reserves
13th Pennsylvania Reserves
2nd Brigade: Colonel H.C.Bolinger
3rd Pennsylvania Reserves
4th Pennsylvania Reserves
7th Pennsylvania Reserves
8th Pennsylvania Reserves
3rd Brigade: Colonel T.F.Gallagher
9th Pennsylvania Reserves
10th Pennsylvania Reserves
11th Pennsylvania Reserves
12th Pennsylvania Reserves
Artillery:
1st Pennsylvania Light Artillery, Batteries A, B, C
5th U.S. Artillery, Battery C
II Army Corps: Major General E.V.Sumner
Escort:
D-K/6th New York Cavalry Regiment
1st Division: Major General I.B.Richardson
1st Brigade: Brigadier General J.C.Caldwell
5th New Hampshire Regiment
7th New York Regiment
61st New York Regiment
64th New York Regiment
81st Pennsylvania Regiment
2nd Brigade: Brigadier General T.F.Meagher
29th Massachusetts Regiment
63rd New York Regiment
69th New York Regiment
88th New York Regiment
3rd Brigade: Colonel J.R.Brooke
2nd Delaware Regiment
52nd New York Regiment
57th New York Regiment
66th New York Regiment
53rd Pennsylvania Regiment
Artillery:
1st New York Light, Battery B
4th U.S., Battery A
4th U.S., Battery C
2nd Division: Major General J.Sedgwick
1st Brigade: Brigadier General W.A.Gorman
15th Massachusetts Regiment
1st Minnesota Regiment
34th New York Regiment
82nd New York Regiment
1st Co/Massachusetts Sharpshooters
2nd Co/Minnesota Sharpshooters
2nd Brigade: Brigadier General O.O.Howard
69th Pennsylvania Regiment
71st Pennsylvania Regiment
72nd Pennsylvania Regiment
106th Pennsylvania Regiment
3rd Brigade: Brigadier General N.J.T.Dana
19th Massachusetts Regiment
20th Massachusetts Regiment
7th Michigan Regiment
42nd New York Regiment
59th New York Regiment
Artillery:
1st Rhode Island Light, Battery C
1st U.S., Battery I
3rd Division: Major General W.H.French
1st Brigade: Brigadier General N.Kimball
14th Indiana Regiment
8th Ohio Regiment
132nd Pennsylvania Regiment
7th West Virginia Regiment
2nd Brigade: Colonel D.Morris
14th Connecticut Regiment
108th New York Regiment
130th Pennsylvania Regiment
3rd Brigade: Brigadier General M. Weber
1st Delaware Regiment
5th Maryland Regiment
4th New York Regiment
Unattached Artillery:
1st New York Light, Battery G
1st Rhode Island Light, Battery B
1st Rhode Island Light, Battery G
IV Army Corps:
1st Division: Major General D.N.Couch (Arrived Antietam on
the morning of 9/18 - attached to VI Corps as 3rd
Division 9/26)
1st Brigade: Brigadier General C.Devens Jr,
7th Massachusetts Regiment
10th Massachusetts Regiment
36th New York Regiment
2nd Rhode Island Regiment
2nd Brigade: Brigadier General A.P.Howe
62nd New York Regiment
92nd Pennsylvania Regiment
98th Pennsylvania Regiment
102nd Pennsylvania Regiment
139th Pennsylvania Regiment
3rd Brigade: Brigadier General J. Cochran
65th New York Regiment
67th New York Regiment
122nd New York Regiment
23rd Pennsylvania Regiment
61st Pennsylvania Regiment
82nd Pennsylvania Regiment
Artillery:
1st Pennsylvania Light, Battery C
1st Pennsylvania Light, Battery D
2nd U.S., Battery G
New York Light, 3rd Battery
V Army Corps: Major General Fitz-John Porter
Headquarters: Det/1st Maine Cavalry Regiment
1st Division: Major General G.W.Morrell
1st Brigade: Colonel J. Barnes
2nd Maine Regiment
18th Massachusetts Regiment
22nd Massachusetts Regiment
1st Michigan Regiment
13th New York Regiment
25th New York Regiment
118th Pennsylvania Regiment
2nd Brigade: Brigadier General C. Griffin
2nd District of Columbia Regiment
9th Massachusetts Regiment
32nd Massachusetts Regiment
4th Michigan Regiment
14th New York Regiment
62nd Pennsylvania Regiment
3rd Brigade: Colonel T.B.W.Stockton
20th Maine Regiment
16th Michigan Regiment
12th New York Regiment
17th New York Regiment
44th New York Regiment
82nd Pennsylvania Regiment
Artillery:
Massachusetts Light, Battery C
1st Rhode Island Light, Battery C
5th U.S., Battery D
Sharpshooters:
1st U.S. Regiment
2nd Division: Major General George Sykes
1st Brigade: Lieutenant Colonel R.C.Buchanan
3rd U.S. Infantry Regiment
4th U.S. Infantry Regiment
1/12th U.S. Infantry Regiment
2/12th U.S. Infantry Regiment
1/14th U.S. Infantry Regiment
2/14th U.S. Infantry Regiment
2nd Brigade: major C.S.Lovell
1st & 6th U.S. Infantry Regiment
2nd & 10th U.S. Infantry Regiment
11th U.S. Infantry Regiment
17th U.S. Infantry Regiment
3rd Brigade: Colonel G.K.Warren
5th New York Regiment
140th New York Regiment
146th New York Regiment
Artillery:
1st U.S.Artillery, Battery E
1st U.S.Artillery, Battery G
5th U.S.Artillery, Battery I
5th U.S.Artillery, Battery K
3rd Division: Major General Andrew A.Humphreys (Arrived
morning of 9/18)
1st Brigade: Brigadier General E.B.Tyler
91st Pennsylvania Regiment
126th Pennsylvania Regiment
129th Pennsylvania Regiment
134th Pennsylvania Regiment
2nd Brigade: Colonel P.H.Allabach
123rd Pennsylvania Regiment
131st Pennsylvania Regiment
133rd Pennsylvania Regiment
154th Pennsylvania Regiment
Artillery: Captain L.N.Robinson
1st New York Light, Battery C
1st Ohio Light, Battery L
Artillery Reserve: Lt. Colonel W. Hays
1st Bn/New York Light, Battery A
1st Bn/New York Light, Battery B
1st Bn/New York Light, Battery C
1st Bn/New York Light, Battery D
New York Light, 5th Battery
1st U.S., Battery K
4th U.S., Battery G
VI Army Corps: Major General W.B.Franklin
Headquarters: B-G/6th Pennsylvania Cavalry Regiment
1st Division: Major General H.W.Slocum
1st Brigade: Colonel A.T.A.Torbert
1st New Jersey Regiment
2nd New Jersey Regiment
3rd New Jersey Regiment
4th New Jersey Regiment
2nd Brigade: Colonel J.J.Bartlett
1st Maine Regiment
16th New York Regiment
27th New York Regiment
96th Pennsylvania Regiment
3rd Brigade: Brigadier General J.Newton
18th New York Regiment
31st New York Regiment
32nd New York Regiment
95th Pennsylvania Regiment
121st New York Regiment
Artillery
Maryland Light, Battery A
Massachusetts Light, Battery A
New Jersey Light, Battery A
2nd U.S., Battery D
2nd Division: Major General W.F.Smith
1st Brigade: Brigadier General W.S.Hancock (assigned to
command of 1st Div. II Corps on 9/17)
6th Maine Regiment
43rd New York Regiment
49th Pennsylvania Regiment
137th Pennsylvania Regiment
5th Wisconsin Regiment
2nd Brigade: Brigadier General W.T.H.Brooks
2nd Vermont Regiment
3rd Vermont Regiment
4th Vermont Regiment
5th Vermont Regiment
6th Vermont Regiment
3rd Brigade: Colonel W.H.Irwing
7th Maine Regiment
20th New York Regiment
33rd New York Regiment
49th New York Regiment
77th New York Regiment
Artillery:
New York Light, 1st Battery
Maryland Light, Battery B
5th U.S. Artillery, Battery F
XI Army Corps: Major General J.L. Reno (Killed 9/14)
Major General A.E.Burnside
1st Division: Major General O.B.Wilcox
1st Brigade: Colonel B.C.Christ
28th Massachusetts Regiment
17th Michigan Regiment
79th New York Regiment
50th Pennsylvania Regiment
2nd Brigade: Colonel T.Welsh
8th Michigan Regiment
46th New York Regiment
45th Pennsylvania Regiment
100th Pennsylvania Regiment
Artillery:
Massachusetts Light, 8th Battery
2nd U.S. Artillery, Battery E
2nd Division: Major General S.D.Sturgis
1st Brigade: Brigadier General J.Nagle
2nd Maryland Regiment
6th New Hampshire Regiment
9th New Hampshire Regiment
48th Pennsylvania Regiment
2nd Brigade: Brigadier General
21st Massachusetts Regiment
35th Massachusetts Regiment
51st New York Regiment
51st Pennsylvania Regiment
Artillery:
Pennsylvania Light, Battery D
4th U.S. Artillery, Battery E
3rd Division: Major General I.P.Rodman (Mortally wounded
9/17)
1st Brigade: Colonel H.S.Fairchild
9th New York Regiment
89th New York Regiment
103rd New York Regiment
2nd Brigade: Colonel E.Harland
8th Connecticut Regiment
11th Connecticut Regiment
16th Connecticut Regiment
4th Rhode Island Regiment
Artillery:
5th U.S. Artillery, Battery A
Battery of Dahlgren Boat Howitzers attached
9th New York
Kanawha Division: Brigadier General J.D.Cox
1st Brigade: Colonel E.P.Scammon
12th Ohio Regiment
23rd Ohio Regiment
30th Ohio Regiment
Ohio Light Artillery, 1st Battery
Gilmore's Company, West Virginia Cavalry
Harrison's Company, West Virginia Cavalry
2nd Brigade: Colonel G.Cook
11th Ohio Regiment
28th Ohio Regiment
36th Ohio Regiment
Schambeck's 's Company, Chicago Dragoons
Kentucky Light Artillery, Simmond's Battery
Unattached:
6th New York Cavalry Regiment (8 cos)
Independent Company/Ohio Cavalry
3rd U.S. Artillery, Battery L
3rd U.S. Artillery, Battery M
2nd New York Artillery, Battery L
XII Army Corps: Major General J.K.F.Mansfield (mortally wounded
9/17)
Headquarters: L/1st Michigan Cavalry Regiment
1st Division: Brigadier General A.S.Williams
1st Brigade: Brigadier General S.W.Crawford
5th Connecticut Regiment
10th Maine Regiment
29th New York Regiment
46th Pennsylvania Regiment
124th Pennsylvania Regiment
125th Pennsylvania Regiment
128th Pennsylvania Regiment
3rd Brigade: Brigadier General G.H.Gordon
27th Indiana Regiment
2nd Massachusetts Regiment
13th New Jersey Regiment
107th New York Regiment
3rd Wisconsin Regiment
Zouaves d'Afrique, Pennsylvania
2nd Division: Brigadier General G.S.Greene
1st Brigade: Lt. Colonel H.Tyndale
5th Ohio Regiment
7th Ohio Regiment
66th Ohio Regiment
29th Ohio Regiment
28th Pennsylvania Regiment
2nd Brigade: Colonel H.J.Stainrook
111th Pennsylvania Regiment
3rd Maryland Regiment
102nd New York Regiment
109th New York Regiment
3rd Brigade: Colonel W.B.Goodrich (Killed 9/17)
3rd Delaware Regiment
Purnell Legion
60th New York Regiment
78th New York Regiment
Artillery:
Maine Light, 4th Battery
Maine Light, 8th Battery
1st New York Light, Battery M
New York Light, 10th Battery
Pennsylvania Light, Battery E
Pennsylvania Light, Battery F
U.S.Artillery, Battery F
Cavalry Division: Brigadier General A.Pleaston
1st Brigade: Major C.J.Whiting
5th United States Cavalry Regiment
6th United States Cavalry Regiment
2nd Brigade: Colonel J.F.Farnsworth
8th Illinois Cavalry Regiment
3rd Indiana Cavalry Regiment
1st Massachusetts Cavalry Regiment
8th Pennsylvania Cavalry Regiment
3rd Brigade: Colonel R.H.Rush
4th Pennsylvania Cavalry Regiment
6th Pennsylvania Cavalry Regiment
4th Brigade: Colonel A.T.McReynolds
1st New York Cavalry Regiment
12th Pennsylvania Cavalry Regiment
5th Brigade: Colonel B.F.Davis
8th New York Cavalry Regiment
3rd Pennsylvania Cavalry Regiment
Artillery
2nd U.S.Artillery, Battery A
2nd U.S.Artillery, Battery B
2nd U.S.Artillery, Battery M
3rd U.S.Artillery, Battery C
3rd U.S.Artillery, Battery G
Unattached:
Det/15th Pennsylvania Cavalry Regiment
1st Maine Cavalry Regiment
Murfin, J.V., The Gleam of Bayonettes, The Battle
of Antietam and the Maryland Campaign of 1862
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