Commanded by:
Brigadier General George G. Meade (took over 1st Corps)
Brigadier General Truman Seymour

First Brigade	Brigadier General Truman Seymour (^) Colonel R. Biddle Roberts
1st Regiment Pennsylvania Reserves Infantry	Colonel R. Biddle Roberts (^) Captain William C. Talley
2nd Regiment Pennsylvania Reserves Infantry	Captain James N. Byrnes
5th Regiment Pennsylvania Reserves Infantry	Colonel Joseph W. Fisher
6th Regiment Pennsylvania Reserves Infantry	Colonel William Sinclair
13th Regiment Pennsylvania Reserves Infantry	Colonel Hugh W. McNeil (k 9/16) Captain Dennis McGee
Second Brigade	Colonel Albert L. Magilton
3rd Regiment Pennsylvania Reserves Infantry	Lieutenant Colonel John Clark
4th Regiment Pennsylvania Reserves Infantry	Major John Nyce
7th Regiment Pennsylvania Reserves Infantry	Major Chauncey A. Lyman
8th Regiment Pennsylvania Reserves Infantry	Major Silas M. Bailey
Third Brigade	Colonel Thomas F. Gallagher (w) Lieutenant Colonel Robert Anderson
9th Regiment Pennsylvania Reserves Infantry	Lieutenant Colonel Robert Anderson (^) Captain Samuel B. Dick
10th Regiment Pennsylvania Reserves Infantry	Lieutenant Colonel Adoniram J. Warner (w) Captain Jonathan P. Smith
11th Regiment Pennsylvania Reserves Infantry	Lieutenant Colonel Samuel M. Jackson
12th Regiment Pennsylvania Reserves Infantry	Captain Richard Gustin
Artillery
Battery A, 1st Pennsylvania Light Artillery	Lieutenant John G. Simpson
Battery B, 1st Pennsylvania Light Artillery	Captain James H. Cooper
Battery C, 5th United States Artillery	Captain Dunbar B. Ransom

 

Key to notes:
(k) = killed, (w) = wounded, (mw) = mortally wounded, (c) = captured (^) = took over parent unit
Links for regiments, batteries, companies, and individuals go to unit histories or biographies on www.civilwarintheeast.com