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United States Army > Army of the Potomac

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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.