United States Army > Army of the Potomac

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Guards & Orderlies
Oneida (New York) Cavalry Company Captain Daniel P. Mann
Provost Guard Major William H. Wood
1st Maryland Cavalry Regiment Lieutenant Colonel James M. Deems from Cav. Corps, 2 Div., 1 Brig.
80th New York Infantry Regiment Colonel Jacob Hardenberg
93rd New York Infantry, Cos. AFH&K Colonel John S. Crocker
Engineer Brigade Brigadier General Daniel Woodbury
15th New York Engineer Regiment Major Walter N. Cassin
50th New York Engineer Regiment Lieutenant Colonel William H. Pettes
Regular Engineer Battalion Captain George Henry Mendell
Headquarters Staff
Chief of Staff Major General Andrew A. Humphreys
Chief of Artillery Brigadier General Henry J. Hunt
Chief Engineer
Assistant Adjutant General Brigadier General Seth Williams
Inspector General Colonel Delos B. Sacket
Chief Quartermaster Lieutenant Colonel Rufus Ingalls
Medical Director Surgeon Jonathan Letterman
Bureau of Information Colonel George H. Sharpe