United States Army > Army of the Potomac


March 1862 • to April >

Commanded by Brigadier General Samuel P. Heintzelman

The 3rd Corps was created on March 3, 1862 and announced March 13, 1862.

First Division Brigadier General Fitz John Porter
1st Brigade Brig. Gen. J. H. Martindale
2nd Brigade Brig. Gen. George Morrell
3rd Brigade Brig. Gen. Daniel Butterfield
Second Division Brigadier General Joseph Hooker
1st Brigade Brig. Gen. H. M. Naglee
2nd Brigade Brig. Gen. Daniel Sickles
3rd Brigade Colonel S. M. Starr
Third Division Brigadier General C. S. Hamilton
1st Brigade Brig. Gen. Charles D. Jameson
2nd Brigade Brig. Gen. David B. Birney
3rd Brigade Brig. Gen. Hiram G. Berry
Cavalry
3rd Pennsylvania Cavalry Regiment Colonel William W. Averill from Porter’s Div.