United States ArmyArmy of the Potomac


< to April • May 1862 • to June >

Commanded by Brigadier General Samuel P. Heintzelman (to Major General on 5/5)

The 1st Division was detached on 5/19 to become the 1st Division of the newly created 5th Corps.

First Division Brigadier General Fitz John Porter to 5th Corps 5/5
1st Brigade Brigadier General J. H. Martindale
2nd Brigade Brigadier General George Morrell
3rd Brigade Brigadier General Daniel Butterfield
Second Division Brigadier General Joseph Hooker
1st Brigade Brigadier General Cuvier Grover
2nd Brigade Colonel Nelson Taylor (until 5/11)
Brigadier General J. Abercrombie (5/11 – 5/24)
Brigadier General Daniel Sickles
3rd Brigade Colonel S. M. Starr (except 5/3 – 5/30)
Brigadier General Francis E. Patterson (5/3 – 5/30)
Third Division Brigadier General P. Kearney
1st Brigade Brigadier General Charles Jameson (to 5/12)
Brigadier General John C. Robinson
2nd Brigade Brigadier General David B. Birney
3rd Brigade Brigadier General Hiram G. Berry
Cavalry
3rd Pennsylvania Cavalry Regiment Colonel William W. Averill