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Commanded by Major General John Dix

Created on March 22, 1862, to consist of New Jersey, Pennsylvania, Delaware and the Eastern Shore of Maryland and Virginia along with the counties of Cecil, Harford, Baltimore and Ann Arundel in Maryland. Almost all of the troops were from Dix’s Command of the Army of the Potomac.

Infantry
2nd Delaware Infantry Regiment Colonel W. Henry Wharton
10th Maine Infantry Regiment Colonel George L. Beale to Railroad Brig. (below)
1st Maryland Eastern Shore Regiment Colonel James Wallace to District Eastern Shore (below)
2nd Maryland Eastern Shore Regiment Colonel Edward Wilkins to District Eastern Shore (below)
2nd Maryland Infantry Regiment Colonel John Sommer
3rd Maryland Infantry Regiment Colonel John C. McConnell
Patapsco Maryland Guard Colonel James W. McMillan to Railroad Brig. (below)
Baltimore Maryland Light Guard
Purnell Legion (Maryland) to District Eastern Shore (below)
17th Massachusetts Infantry Regiment Colonel Thomas I.C. Amory to Foster’s 1 Brigade, Burnside’s Expeditionary Corps
3rd New York Infantry Regiment Colonel Samuel M. Alford
4th New York Infantry Regiment Colonel Alfred W. Taylor
5th New York Infantry Regiment Colonel Abram Duryea (to BG 9/10)
Colonel Gouverneur K. Warren
to Sykes’ Infantry Reserve, Army Potomac
60th New York Infantry Regiment Colonel William B. Hayward to Railroad Brig. (below)
11th Pennsylvania Infantry Regiment Colonel Richard Coulter
87th Pennsylvania Infantry Regiment Colonel George Hay
Artillery 
Battery A, Maryland Light Artillery
Battery B, Maryland Light Artillery
Battery L, 1st New York Light Artillery
2nd United States Artillery, Battery I at Fort McHenry
Cavalry
1st Maryland Cavalry Regiment Colonel Andrew G. Miller
Purnell Legion Cavalry (Maryland)
5th New York Cavalry Regiment Colonel DeForest Othneil to 5th Corps 3/31
10th New York Cavalry Regiment Colonel John C. Lemmon from duty at Gettysburg
District of the Eastern Shore
1st Maryland Eastern Shore Regiment Colonel James Wallace from Unattached Infantry (above)
2nd Maryland Eastern Shore Regiment Colonel Edward Wilkins from Unattached Infantry (above)
Purnell Legion Infantry (Maryland) Colonel William J. Leonard (after 3/17) from Unattached Infantry (above)
Railroad Brigade Colonel Dixon S. Miles
1st Maryland Potomac Home Brig. Colonel William P. Maulsby from Dept. Shenandoah, Banks’ Div.
4th Maryland Potomac Home Bde. Colonel William J.L. Nicodemus from Dept. Shenandoah, Banks’ Div.
Patapsco Maryland Guard Colonel James W. McMillan from Unattached Infantry (above)
10th Maine Infantry Regiment Colonel DeForest Othneil from Unattached Infantry (above)
60th New York Infantry Regiment Colonel William B. Hayward from Unattached Infantry (above)
54th Pennsylvania Infantry Regiment Colonel Jacob M. Campbell from Defenses of Washington