U.S. Army - Army of the Potomac - Fifth Army Corps

Third Division

Brigadier General Andrew A. Humphreys (until 5/25)

Discontinued May 25, 1863

First Brigade

Bde. Gen. E. B. Tyler

91st Pennsylvania Infantry Regiment

Colonel Edgar M Gregory

to 2nd Div., 3rd Bde.

126th Pennsylvania Infantry Regiment

Lt. Colonel David W. Rowe

mustered out 5/20

129th Pennsylvania Infantry Regiment

Colonel Jacob G. Frick

mustered out 5/18

134th Pennsylvania Infantry Regiment

Colonel Edward O'Brien

mustered out 5/26

Second Brigade

Colonel P. H. Allabach

123rd Pennsylvania Infantry Regiment

Colonel John B. Clark

mustered out 5/13

131st Pennsylvania Infantry Regiment

Major Robert W. Patton

mustered out 5/23

133rd Pennsylvania Infantry Regiment

Colonel Franklin B. Speakman

mustered out 5/24

155th Pennsylvania Infantry Regiment

Lt. Colonel John H. Cain

to 2nd Div., 3rd Bde.

Artillery

Captain Alanson M. Randol

1st New York Artilery, Battery C

Captain Almont Barnes

to Corps Artillery Brigade

1st United States Artillery, Batteries E&G

Captain Alanson M. Randol