< to June • July 1862 • to August >

Commanded by Major General John Wool

On July 22 the troops of the Middle Department were organized as the 8th Corps.

Defences of Baltimore  Colonel W. H. Morris
17th Indiana Battery from Indiana
1st Maryland Infantry Regiment Colonel John R. Kenly
Purnell Legion Cavalry (Maryland)
5th New York Heavy Artillery Colonel Samuel Graham
7th New York State Militia Colonel Marshall Lefferts
19th New York State Militia Colonel William R. Brown
22nd New York State Militia Colonel James Monroe (d 7/21)
Lt. Colonel Lloyd Aspinwall
37th New York State Militia Colonel Charles Roome
47th New York State Militia Colonel Jeremiah V. Meserole
67th Pennsylvania Infantry Regiment Colonel John F. Staunton to Annapolis (below)
87th Pennsylvania Infantry Regiment Colonel George Hay
13th Pennsylvania Cavalry Regiment Lt. Colonel James Galligher
2nd United States Artillery, Battery I at Fort McHenry
Annapolis
Purnell Legion Cavalry (Maryland) Co. B from Defences Baltimore (above)
67th Pennsylvania Infantry Regiment Colonel John F. Staunton from Defences Baltimore (above)
District of the Eastern Shore  Henry H. Lockwood
1st Maryland Eastern Shore Regiment Colonel David P. DeWitt
2nd Maryland Eastern Shore Regiment  Colonel Edward Wilkins
Purnell Legion Cavalry (Maryland) Co. A from Defences Baltimore (above)
Railroad District Brigadier General Benjamin F. Kelly 
23rd Illinois Infantry Regiment from Mountain Department, Railroad District
65th Illinois Infantry Regiment from Mountain Department, Railroad District
1st Maryland Potomac Home Brig. Colonel William P. Maulsby from Railroad Brigade (below)
2nd Maryland Potomac Home Bde. Colonel Robert Bruce from Mountain Department, Railroad District
Loudon Va. Rangers organized 6/20
84th Ohio Infantry Regiment Colonel William Lawrence from Mountain Department, Railroad District
86th Ohio Infantry Regiment Colonel Barnabas Burns from Mountain Department, Railroad District
54th Pennsylvania Infantry Regiment Colonel Jacob M. Campbell from Railroad Brigade (below)
87th Pennsylvania Infantry Regiment Colonel George Hay from Defences Baltimore (above)
Ringgold Pennsylvania Cavalry from Mountain Department, Railroad District
Washington Co. Pennsylvania Cavalry from Mountain Department, Railroad District
6th West Virginia Infantry Regiment Colonel Nathan Wilkinson from Mountain Department, Railroad District
10th West Virginia Infantry Regiment Colonel Thomas M. Harris from Mountain Department, Railroad District
11th West Virginia Infantry Regiment Colonel John C. Rathbone from Mountain Department, Railroad District
1st Illinois Artillery, Battery L from Mountain Department, Railroad District
West Virginia Artillery, Battery F from Mountain Department, Railroad District
West Virginia Artillery, Battery G from Mountain Department, Railroad District
Railroad Brigade Colonel Dixon S. Miles
2nd Illinois Artillery, Battery M
1st Maryland Potomac Home Brig. Colonel William P. Maulsby
1st Maryland Potomac Home Brig. Cavalry Captain Henry A. Cole
3rd Maryland Potomac Home Brig.
4th Maryland Potomac Home Brig. Colonel William J.L. Nicodemus
Patapsco Maryland Guard Colonel James W. McMillan
8th New York Cavalry Regiment Colonel Benjamin F. Davis
5th New York Heavy Artillery, Cos. A&F
12th New York State Militia
32nd Ohio Infantry Regiment Colonel Thomas H. Ford from Army of Virginia, Piatt’s Brig.
60th Ohio Infantry Regiment Clonel William H. Trimble from Army of Virginia, Piatt’s Brig.
87th Ohio Infantry Regiment Colonel Henry B. Banning from Ohio
54th Pennsylvania Infantry Regiment Colonel Jacob M. Campbell to Railroad District (see above)