vignette|droite|alt=George B. McClellan|George B. McClellan Les unités et commandants de l'armée de l'Union ont combattu lors de la bataille d'Antietam de la guerre de Sécession. L'ordre de bataille confédéré d'Antietam est indiqué séparément ainsi qu'un ordre de bataille global au niveau de la brigade . L'ordre de bataille est compilé à partir de l'organisation de l'arméeMultiple commander names indicate command succession of command during the battle or the campaign. lors de la campagne du MarylandOfficial Records, Series I, Volume XIX, Part 1, pages 169-180; Antietam National Battlefield-Army of the Potomac, des décomptes des victimesOfficial Records, Series I, Volume XIX, Part 1, pages 189-204 et des rapportsOfficial Records, Series I, Volume XIX, Part 1, pages 1111-1114, 1169-1171; Official Records, Series I, Volume LI, Part 1, pages 1312, 1391-1392.

Abréviations utilisées Grade militaire

Autre = blessé = mortellement blessé = tué = capturé

Armée du Potomac George McClellan

État-major général et quartiers généraux État-Major général Chef d'état-major : Randolph B. Marcy Adjoint de l'adjudant-général : Seth Williams Inspecteur Général : Delos B. Sackett Chef de l'artillerie : Henry J. Hunt Chef quartier maître : Rufus Ingalls Quartier généralThe Volunteer Engineer Brigade (15th and 50th New York) under Brigadier General Daniel P. Woodbury detached at Washington, D. C.

Escorte : James B. McIntyre Compagnie indépendante d'Oneida (New York) Cavalerie : Daniel P. Mann 4th U.S. Cavalry, compagnie A : Thomas H. McCormick 4th U.S. Cavalry, compagnie E : James B. McIntyre Bataillon régulier des ingénieurs : James C. Duane

Garde de la prévôtéThe composition of this command is not fully reported on the returns : William H. Wood 2nd U.S Cavalry, compagnies E, F, H, et K : George A. Gordon 8th U.S. Infantry, compagnies A, D, F, et G : Royal T. Frank 19th U.S. Infantry, compagnie G : Edmund L. Smith 19th U.S. Infantry, compagnie H : Henry S. Welton Garde des quartiers générauxSturges (Illinois) Rifles detached at Washington, D. C. : Granville O. Haller 93th New York : Benjamin C. Butler Garde des quartiers maîtres : 1st U.S. Cavalry, compagnies B, C, H, et I : Marcus A. Reno

Ier corps Joseph Hooker

George G. Meade

Notes Escorte : 2nd New York Cavalry, compagnies A, B, I et K : John E. Naylor Division Brigade Régiments et autresPremière division

Abner DoubledayPremière Brigade

Walter Phelps, Jr. 22nd New York : John McKie, Jr. 24th New York : John D. O'Brian 30th New York : William M. Searing 84th New York (14th Militia) : William H. de Bevoise 2nd United States Sharpshooters : Henry A. V. Post Deuxième brigade

J. William Hofmann 7th Indiana : Ira G. Grover 76th New York : John W. Young 95th New York : Edward Pye 56th Pennsylvania : Frederick Williams Troisième brigade

Marsena R. Patrick 21st New York : William F. Rogers 23rd New York : Henry C. Hoffman 35th New York : Newton B. Lord 80th New York (20th Militia) : Theodore B. Gates Quatrième brigade

John Gibbon 19th Indiana : Alois O. Bachman (), William W. Dudley 2nd Wisconsin : Thomas S. Allen , George B. Ely 6th Wisconsin : Edward S. Bragg , Rufus R. Dawes 7th Wisconsin : John B. Callis Artillerie

J. Albert Monroe New Hampshire Light, 1st Battery: Frederick M. Edgell 1st Rhode Island Light, Battery D: J. Albert Monroe 1st New York Light, Battery L: John A. Reynolds 4th United States, Battery B: Joseph B. Campbell , James StewartDeuxième division

James B. RickettsFor Ricketts being wounded see: John H. Eicher and David J. Eicher, Civil War High Commands, page 453 Première brigade

Abram Duryée 97th New York : Charles B. Northrup 104th New York : Lewis C. Skinner 105th New York : Howard Carroll (), John C. Whiteside 107th Pennsylvania : James McThomson Deuxième brigadeThe Antietam National Battlefield site and the Official Records lists Colonel Lyle as succeeding Colonel Christian in brigade command, but this is not mentioned in the reports. (see: Ricketts' and Lyle's report)

William A. Christian 26th New York : Richard H. Richardson 94th New York : Calvin Littlefield 88th Pennsylvania : George W. Gile , Henry B. Myers 90th Pennsylvania : Peter Lyle , William A. Leech Troisième brigade16th Maine détaché en tant que garde ferroviaire.

George L. Hartsuff

Richard Coulter 12th Massachusetts : Elisha Burbank (), Benjamin F. Cook 13th Massachusetts : J. Parker Gould 83rd New York (9th Militia): William Atterbury 11th Pennsylvania : Richard Coulter, David M. Cook Artillerie 1st Pennsylvania Light, Battery F : Ezra W. Matthews Pennsylvania Light, Battery C : James ThompsonTroisième division

George G. Meade

Truman Seymour Première brigade

Truman Seymour

Richard Biddle Roberts 1st Pennsylvania Reserves : Richard Biddle Roberts, William C. Talley 2nd Pennsylvania Reserves : James N. Byrnes 5th Pennsylvania Reserves : Joseph W. Fisher 6th Pennsylvania Reserves : William Sinclair 13th Pennsylvania Reserves (1st Rifles) : Dennis McGee Deuxième brigade

Albert L. Magilton 3rd Pennsylvania Reserves : John Clark 4th Pennsylvania Reserves : John Nyce 7th Pennsylvania Reserves: Chauncey A. Lyman 8th Pennsylvania Reserves: Silas M. Bailey Troisième brigade

Robert Anderson 9th Pennsylvania Reserves : Samuel B. Dick 10th Pennsylvania Reserves : Adoniram J. Warner , Jonathan P. Smith 11th Pennsylvania Reserves : Samuel M. Jackson 12th Pennsylvania Reserves : Richard Gustin ArtillerieBattery G, 1st Pennsylvania Light Artillery detached at Washington, D. C. 1st Pennsylvania Light, Battery A : John G. Simpson 1st Pennsylvania Light, Battery B : James H. Cooper 5th United States, Battery C : Dunbar R. Ransom

IIe corps Edwin V. Sumner

Escorte : 6th New York Cavalry, compagnie D : Henry W. Lyon 6th New York Cavalry, compagnie K : Riley Johnson Division Brigade Régiments et autresPremière division

Israel B. Richardson ()

John C. Caldwell

Winfield S. HancockAssigned to command of First Division, II Corps, September 17, 1862 (see: Official Records, Series I, Volume XIX, Part 2, page 316) Première brigade

John C. Caldwell 5th New Hampshire : Edward E. Cross 7th New York : Charles Brestel 61st and 64th New York : Francis C. Barlow , Nelson A. Miles 81st Pennsylvania : H. Boyd McKeen Deuxième brigade

Thomas F. Meagher

John Burke 29th Massachusetts : Joseph H. Barnes 63rd New York : John Burke, Henry Fowler , Richard C. Bentley , Joseph O'Neill 69th New York : James Kelly , James Cavanagh 88th New York : Patrick Kelly Troisième brigade

John R. Brooke 2nd Delaware : David L. Stricker 52nd New York : Paul Frank 57th New York : Philip S. Parisen (), Alford B. Chapman 66th New York : Julius Wehle 53rd Pennsylvania : Richards McMichael Artillerie 1st New York Light, Battery B : Rufus D. Pettit 4th United States, Battery A and C: Evan ThomasDeuxième division

John Sedgwick

Oliver O. Howard Première brigade

Willis A. Gorman 15th Massachusetts : John W. Kimball 1st Minnesota : Alfred Sully 34th New York : James A. Suitor 82nd New York (2nd Militia) : Henry W. Hudson Massachusetts Sharpshooters, 1st Company : John Saunders () Minnesota Sharpshooters, 2nd Company : William F. RussellDeuxième brigade

Oliver O. Howard

Joshua T. Owen

DeWitt C. BaxterAssumed command after the brigade was reunited (see: Howard's report) 69th Pennsylvania : Joshua T. Owen 71st Pennsylvania : Isaac J. Wistar 72nd Pennsylvania : DeWitt C. Baxter 106th Pennsylvania : Turner G. Morehead Troisième brigade

Napoleon J.T. Dana

Norman J. Hall 19th Massachusetts : Edward W. Hinks , Arthur F. Devereux , H. G. Weymouth 20th Massachusetts : William R. Lee 7th Michigan : Norman J. Hall, Charles J. Hunt 42nd New York : George N. Bomford , James E. Mallon 59th New York : William L. Tidball Artillerie 1st Rhode Island Light, Battery A : John A. Tompkins 1st United States, Battery I : George A. WoodruffTroisième division

William H. French Première brigade

Nathan Kimball 14th Indiana : William Harrow 8th Ohio : Franklin Sawyer 132nd Pennsylvania : Richard A. Oakford (), Vincent M. Wilcox 7th West Virginia : Joseph Snider Deuxième brigade

Dwight Morris 14th Connecticut : Sanford H. Perkins 108th New York : Oliver H. Palmer 130th Pennsylvania : Henry I. Zinn Troisième brigade

Max Weber

John W. Andrews 1st Delaware : John W. Andrews, Oliver Hopkinson 5th Maryland : Leopold Blumenberg , William W. Bamberger , Salome Marsh et , Ernest F. M. Faehtz 4th New York : John D. MacGregorArtillerie non affectée 1st New York Light, Battery G : John D. Frank 1st Rhode Island Light, Battery B : John G. Hazard 1st Rhode Island Light, Battery G : Charles D. Owen

IVe corps Division Brigade Régiments et autresPremière divisionServed with the VI Corps; not engaged on September 17, 1862; assigned to the VI Corps as the Third Division September 26, 1862

Darius N. Couch Première brigade

Charles Devens 7th Massachusetts : David A. Russell 10th Massachusetts : Henry L. Eustis 36th New York : William H. Browne 2nd Rhode Island : Frank Wheaton Deuxième brigade

Albion P. Howe 62nd New York : David J. Nevin 93rd Pennsylvania : James M. McCarter 98th Pennsylvania : John F. Ballier 102nd Pennsylvania : Thomas A. Rowley 139th Pennsylvania Joined September 17, 1862: Frank H. Collier Troisième brigade

John Cochrane 65th New York : Alexander Shaler 67th New York : Julius W. Adams 122nd New York : Silas Titus 23rd Pennsylvania : Thomas H. Neill 31st Pennsylvania : George C. Spear 61st Pennsylvania : David H. Williams Artillerie New York Light, 3rd Battery The 3rd Battery New York Light Artillery transferred to First Division, IV Corps September 15, 1862: William Stuart 1st Pennsylvania Light, Battery C : Jeremiah McCarthy 1st Pennsylvania Light, Battery D : Michael Hall 2nd United States, Battery G : John H. Butler

Ve corps Fitz John Porter

Escorte : 1st Maine Cavalry (détachement) : George J. Summat Division Brigade Régiments et autresPremière division

George W. Morell Première brigade

James Barnes 2nd Maine : Charles W. Roberts 18th Massachusetts : Joseph Hayes 22nd Massachusetts: William S. Tilton 1st Michigan : Emory W. Belton 13th New York : Elisha Marshall 25th New York : Charles A. Johnson 118th Pennsylvania : Charles M. Prevost Massachusetts Sharpshooters, 2nd Company : Lewis E. Wentworth Deuxième brigade

Charles Griffin 2nd District of Columbia : Charles M. Alexander 9th Massachusetts : Patrick R. Guiney 32nd Massachusetts : Francis J. Parker 4th Michigan : Jonathan W. Childs 14th New York : James McQuade 62nd Pennsylvania : Jacob B. Sweitzer Troisième brigade

Thomas B. W. Stockton 20th Maine: Adelbert Ames 16th Michigan : Norval E. Welch 12th New York : William Huson 17th New York : Nelson B. Bartram 44th New York : Freeman Conner 83rd Pennsylvania : Orpheus S. Woodward Michigan Sharpshooters, Brady's Company : Jonas H. Titus Jr. Artillerie Massachusetts Light, Battery C : Augustus P. Martin 1st Rhode Island Light, Battery C : Richard Waterman 5th United States, Battery D : Charles E. Hazlett Sharpshooters 1st United States : John B. IslerDeuxième division

George Sykes Première brigade

Robert C. Buchanan 3rd United States : John D. Wilkins 4th United States : Hiram Dryer 12th United States, 1st Battalion: Matthew M. Blunt 12th United States, 2nd Battalion: Thomas M. Anderson 14th United States, 1st Battalion: W. Harvey Brown 14th United States, 2nd Battalion: David B. McKibbin Deuxième brigade

Charles S. Lovell 1st and 6th United States : Levi C. Bootes 2nd and 10th United States : John S. Poland 11th United States : DeLancey Floyd-Jones 17th United States : George L. Andrews Troisième brigade

Gouverneur K. Warren 5th New York : Cleveland Winslow 10th New York : John W. Marshall Artillerie 1st United States, Batteries E and G : Alanson M. Randol