Federal Army

Army of the Potomac

Organized at Washington, DC

 

Commanding Officer on the Antietam Campaign:
  George Brinton McClellan

 

Members of Interest:
  == Officers of the Staff ==
  BGen. Randolph B. Marcy, Chief of Staff;
  BGen. Henry J. Hunt, Chief of Artillery;
  Lt. William S. Worth, aide to Gen Hunt;
  BGen. John Buford, Chief of Cavalry;
  BGen. Seth Williams, Assistant Adjutant General;
  LCol. Albert V. Colburn, Asst Adjutant General;
  Col. Delos B. Sacket, Inspector General;
  Surg. Jonathan Letterman, Medical Director;
  LCol. E.P. Vollum, Medical Inspector;
  Asst. Surg. T.J. McMillin, Medical Purveyor;
  Asst. Surg. James C. McKee, Asst. Medical Purveyor;
  Asst. Surg. Benjamin D Howard;
  Asst. Surg. Charles C Gray;
  Asst. Surg. Alexander Ingram;
  LCol. Rufus Ingalls, Chief Quartermaster;
  Lt. Henry Page, asst. to Col Ingalls;
  Capt. James W. Forsyth, Acting Asst Adjutant General;
  Maj. Albert J. Myer, Chief of Signals;
  Maj. Thomas T. Eckert, Chief of Telegraphy;
  LCol. David H. Strother, Topographer and Aide-de-camp;
  Lt. Nicholas Bowen, Topographical Engineer;
  Col. Samuel B. Holabird, Aide-de-camp;
  LCol. Edward McK. Hudson, Aide-de-camp;
  Maj. Herbert von Hammerstein, Aide-de-camp;
  Capt. Charles R. Lowell, Aide-de-camp;
  Capt. William S. Abert, Aide-de-camp;
  Capt. George A Custer, Aide-de-camp;
  Capt. Myles W. Keogh, Aide-de-camp;
  Lt. Alonzo H Cushing, Aide-de-camp;
  Lt. John M Wilson, Aide-de-camp
  Lt. James P Martin, Aide-de-camp

  == Visitors & Civilians ==
  Allan Pinkerton, intelligence;
  Edwin Forbes, newspaper artist;
  Alexander Gardner, photographer;
  Clarissa Barton, nurse;
  George Smalley, newspaperman;
  Isabell Fogg, relief worker;
  LCdr. Henry Erben, naval observer;
  Alfred Waud, newspaper artist;
  Dr. Lewis Steiner, US Sanitary Comm.;
  Francis Schell, newspaper artist;
  Dr. James H. Peabody, contract surgeon;
  Asst. Surg. John W. Williams

Units which make up this Army:
  Cavalry Division
  Fifth Army Corps
  First Army Corps
  Headquarters Cavalry Escort, Army of the Potomac
  Ninth Army Corps
  Provost Guard, Army of the Potomac
  Second Army Corps
  Sixth Army Corps
  Twelfth Army Corps
  Volunteer Engineer Brigade, Army of the Potomac
  Headquarters Guard, Army of the Potomac
  Ist United States Cavalry, Companies B,C, H, and I
  Regular Engineer Battalion
  Signal Detachment, Army of the Potomac