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Antietam Union order of battle

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The following Union Army units and commanders fought in the Battle of Antietam of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the army organization during the Maryland Campaign, the casualty returns and the reports.

Contents

Military rank

  • MG = Major General
  • BG = Brigadier General
  • Col = Colonel
  • Ltc = Lieutenant Colonel
  • Maj = Major
  • Cpt = Captain
  • Lt = Lieutenant

    • Other

  • w = wounded
  • mw = mortally wounded
  • k = killed in action
  • c = captured

    • Army of the Potomac

    MG George McClellan

    General Staff and Headquarters

    General Staff

  • Chief of Staff: BG Randolph B. Marcy
  • Assistant Adjutant General: BG Seth Williams
  • Inspector General: BG Delos B. Sackett
  • Chief of Artillery: BG Henry J. Hunt
  • Chief Quartermaster: Ltc Rufus Ingalls

    • General Headquarters

    Escort: Cpt James B. McIntyre

  • Independent Company Oneida (New York) Cavalry: Cpt Daniel P. Mann
  • 4th United States Cavalry, Company A: Lt Thomas H. McCormick
  • 4th United States Cavalry, Company E: Cpt James B. McIntyre

    • Regular Engineer Battalion: Cpt James C. Duane

    Provost Guard: Maj William H. Wood

  • 2nd United States Cavalry, Companies E, F, H, and K: Cpt George A. Gordon
  • 8th United States, Companies A, D, F, and G: Cpt Royal T. Frank
  • 19th United States, Company G: Cpt Edmund L. Smith
  • 19th United States, Company H: Cpt Henry S. Welton

    • Headquarters Guard: Maj Granville O. Haller

  • 93rd New York: Ltc Benjamin C. Butler

    • Quartermaster's Guard:

  • 1st United States Cavalry, Companies B, C, H, and I: Cpt Marcus A. Reno

    • I Corps

    MG Joseph Hooker (w)
    BG George G. Meade

    Escort:

  • 2nd New York Cavalry, Companies A, B, I and K: Cpt John E. Naylor

    • II Corps

    MG Edwin V. Sumner

    Escort:

  • 6th New York Cavalry, Company D: Cpt Henry W. Lyon
  • 6th New York Cavalry, Company K: Cpt Riley Johnson

    • V Corps

    MG Fitz John Porter

    Escort:

  • 1st Maine Cavalry (detachment): Cpt George J. Summat

    • VI Corps

    MG William B. Franklin

    Escort:

  • 6th Pennsylvania Cavalry, Companies B and G: Cpt Henry P. Muirheid

    • IX Corps

    MG Ambrose Burnside
    BG Jacob D. Cox

    Escort:

  • 1st Maine Cavalry, Company G: Cpt Zebulon B. Blethen

    • XII Corps

    MG Joseph K. Mansfield (mw)
    BG Alpheus S. Williams

    Escort:

  • 1st Michigan Cavalry, Company L: Cpt Melvin Brewer

    • References

    Antietam Union order of battle Wikipedia
    (Text) CC BY-SA