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Commanded by Major General John Dix
| Fortress Monroe and Camp Hamilton | ||
| 3rd New York Infantry Regiment | from Div. Suffolk | |
| 139th New York Infantry Regiment | ||
| 3rd Pennsylvania Heavy Artillery | ||
| 2nd Wisconsin Battery | ||
| 4th Wisconsin Battery | ||
| Yorktown | Major General Erasmus D. Keyes | |
| 7th Massachusetts Independent Battery | to Suffolk 9/29 | |
| Battery H, 1st New York Artillery | Captain Joseph Spratt | from 4 Corps, 2 Div. |
| 8th New York Independent Battery | Captain Butler Fitch | |
| Battery E, 1st Pennsylvania Artillery | Captain Theodore Miller | from 4 Corps, 1 Div. |
| Battery H, 1st Pennsylvania Artillery | Captain James Brady | from 4 Corps, 1 Div. |
| Norfolk | Brigadier General Egbert L. Viele | |
| 7th New York Independent Battery | ||
| 99th New York Infantry Regiment | Colonel David W. Wardop | |
| 148th New York Infantry Regiment | from New York | |
| 58th Pennsylvania Infantry Regiment | Colonel Garrett W. Dyckman | |
| 19th Wisconsin Infantry Regiment | ||
| 4th United States Artillery, Battery D | ||
| Division at Suffolk | Brigadier General Joseph K.F. Mansifeld (to 9/8) Major General John J. Peck (9/8 – 9/30) Brigadier General Michael Corcoran |
|
| Ferry’s Brigade | Brigadier General Otis S. Ferry | |
| Foster’s Brigade | Colonel Robert S. Foster | |
| Weber’s Brigade | Brigadier General Max Weber | to Army Potomac, 2 Corps, 3 Div., 3 Brig. 9/8 |
| Wessel’s Brigade | Brigadier General Henry Wessels | |