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Commanded by Major General Philip Kearney

The Third Division was redesignated as the First Division on August 5th, 1862

First Brigade Brig. Gen. John C. Robinson
20th Indiana Infantry Regiment Colonel William L. Brown
87th New York Infantry Regiment Colonel Stephen A. Dodge
57th Pennsylvania Infantry Regiment Colonel Charles T. Campbell to 2nd Brig. (below)
63rd Pennsylvania Infantry Regiment Colonel Alexander Hays
105th Pennsylvania Infantry Regiment Colonel William W. Corbet
Second Brigade Brig. Gen. David Birney
3rd Maine Infantry Regiment Colonel Henry G. Staples
4th Maine Infantry Regiment Colonel Elijah Walker
1st New York Infantry Regiment Colonel Garrett W. Dyckman
38th New York Infantry Regiment Colonel John H.H. Ward
40th New York Infantry Regiment Colonel Thomas W. Egan
101st New York Infantry Regiment Colonel George F. Chester
57th Pennsylvania Infantry Regiment Colonel Charles T. Campbell from 1st Brig. (above)
Third Brigade Colonel Orlando Poe
2nd Michigan Infantry Regiment
3rd Michigan Infantry Regiment Colonel Stephen Champlin
5th Michigan Infantry Regiment Colonel Henry D. Terry
37th New York Infantry Regiment Colonel Samuel B. Hayman
99th Pennsylvania Infantry Regiment Colonel Asher Leidy
Artillery
1st Rhode Island Artilery, Battery E
2nd United States Artillery, Battery G to 1st Div., 4 Corps 8/16