United States Armies in the EastDepartment of Pennsylvania


< to April • May 1861 • to June >

Commanded by Major General Robert Patterson

Unattached
1st Pennsylvania Infantry Regiment Colonel Samuel Yohe to Dept. Annapolis 5/14
2nd Pennsylvania Infantry Regiment Colonel Frederick S. Stumbaugh at Camp Scott near York 4/21
3rd Pennsylvania Infantry Regiment Colonel Francis P. Minier at Camp Scott near York 4/20
4th Pennsylvania Infantry Regiment Colonel John F. Hartranft to Dept. Washington 5/8
5th Pennsylvania Infantry Regiment Colonel R.P. McDowell to Dept. Washington 5/27
6th Pennsylvania Infantry Regiment Colonel James Nagle to 1st Brigade (below)
7th Pennsylvania Infantry Regiment Colonel William I. Irwin from Harrisburg 4/23
8th Pennsylvania Infantry Regiment Colonel A.H. Emley to Unattached, Chambersburg (below)
9th Pennsylvania Infantry Regiment Colonel Henry C. Longnecker to Unattached, Chambersburg (below)
10th Pennsylvania Infantry Regiment Colonel Sullivan A. Meredith from Harrisburg to Chambersburg 5/1
12th Pennsylvania Infantry Regiment Colonel David Campbell to Dept. Annapolis 5/25
13th Pennsylvania Infantry Regiment Colonel Thomas A. Rowley at York 4/26
14th Pennsylvania Infantry Regiment Colonel John W. Johnston mustered in at Harrisburg 4/30
17th Pennsylvania Infantry Regiment Colonel Francis E. Patterson Organized at Philadelphia 4/25
18th Pennsylvania Infantry Regiment Colonel William D. Lewis, Jr. to Dept. Annapolis 5/14
19th Pennsylvania Infantry Regiment Colonel Peter Lyle to Dept. Annapolis 5/10
20th Pennsylvania Infantry Regiment Colonel Wiliam H. Gray Mustered in at Philadelphia 4/30
21st Pennsylvania Infantry Regiment Colonel John F. Ballier to 1st Brigade (below)
22nd Pennsylvania Infantry Regiment Colonel Turner G. Morehead to Dept. Annapolis 5/17
23rd Pennsylvania Infantry Regiment Colonel Charles P. Dare to 1st Brigade (below)
1st Brigade Colonel George Thomas (at Chambersburg)
6th Pennsylvania Infantry Regiment Colonel James Nagle from Unattached (above)
21st Pennsylvania Infantry Regiment Colonel John F. Ballier from Unattached (above)
23rd Pennsylvania Infantry Regiment Colonel Charles P. Dare from Perryville, Md.
Philadelphia City Troop Cavalry Captain Thomas James from Carlisle 5/31
Unattached at Chambersburg
8th Pennsylvania Infantry Regiment Colonel A.H. Emley from Harrisburg
10th Pennsylvania Infantry Regiment Colonel Sullivan A. Meredith from Harrisburg 5/1