< to May • June 1863 • to July >
Commanded by Major General John Dix
| Fourth Corps | Major General Erasmus D. Keyes | |
| 1st Division | Brigadier General Rufus King | reorganized 6/17 | 
| First Brigade | Brigadier General Hector Tyndale | |
| 2nd Massachusetts Cavalry, Companies A, B, C, D & K | from 2 Div. (below) | |
| 2nd New York Cavalry, Battalion | ||
| 169th Pennsylvania Infantry Regiment | Colonel Lewis W. Smith | from King’s Brig. (below) | 
| 8th New York Independent Battery | from 2 Div. (below) | |
| Second Brigade | Colonel George E. Church | |
| 5th Pennsylvania Cavalry Detachment | ||
| 11th Rhode Island Infantry Regiment | Colonel George E. Church | from 1 Div. 7 Corps | 
| 1st Pennsylvania Artillery, Battery E | Captain Theodore Miller | |
| 2nd Wisconsin Independent Battery | Captain Charles Berger | |
| 3rd Brigade | Colonel Charles Klecker | |
| 168th New York Infantry Regiment | Colonel William R. Brown | from King’s Brig. (below) | 
| 172nd Pennsylvania Infantry Regiment | Lieutenant Colonel James A. Johnson | |
| Second Division | Brigadier General George H. Gordon | |
| First Brigade | Colonel William Gurney | |
| 127th New York Infantry Regiment | Lieutenant Colonel Stewart Woodford | |
| 142nd New York Infantry Regiment | Colonel Newton M. Curtiss | |
| 143rd New York Infantry Regiment | Colonel Horace Boughton | |
| 144th New York Infantry Regiment | Colonel David E. Gregory | |
| Second Brigade | Colonel Burr Porter | |
| 22nd Connecticut Infantry Regiment | Colonel George S. Burnham | |
| 40th Massachusetts Infantry Regiment | Colonel Burr B. Porter | |
| 141st New York Infantry Regiment | Colonel John Dininny (dis. 6/1) Colonel William K. Logie | |
| 4th Wisconsin Battery | Captain John F. Vallee | |
| King’s Independent Brigade | dissolved 6/15 | |
| 4th Delaware Infantry Regiment | Colonel Arthur H. Grimshaw | to unattached (below) | 
| 168th New York Infantry Regiment | Colonel William R. Brown | to 1 Div. 3 Brig. (above) | 
| 169th Pennsylvania Infantry Regiment | Colonel Lewis W. Smith | to 1 Div. 3 Brig. (above) | 
| 179th Pennsylvania Infantry Regiment | Colonel William H. Blair | to West’s Ind. Brig. (below) | 
| West’s Advanced Brigade | Colonel R. M. West | |
| 139th New York Infantry Regiment | Colonel Anthony Conk | |
| 178th Pennsylvania Infantry Regiment | Colonel James Johnson | |
| 179th Pennsylvania Infantry Regiment | Colonel William H. Blair | from King’s Brig. (above) | 
| 5th Pennsylvania Cavalry Regiment | Colonel Robert M. West | |
| 6th New York Cavalry, 3rd Battalion | ||
| Unattached | ||
| 4th Delaware Infantry Regiment | Colonel Arthur H. Grimshaw | from King’s Brig. (above) | 
| 172nd Pennsylvania Infantry Regiment | Colonel Charles Kleckner | to 1 Div. 3 Brig. (above) | 
| 1st New York Artillery, Battery F | ||
| 1st New York Artillery, Battery H | ||
| 8th New York Independent Battery | to 1 Div. 1 Brig. (above) | |
| 1st Pennsylvania Artillery, Battery E | Captain Thomas G. Orwig | |
| 1st Pennsylvania Artillery, Battery H | Captain Andrew Fagan | Ordered to Washington late June | 
| 5th United States Artillery, Battery M | ||
| 2nd Massachusetts Cavalry, Cos. C, D & K | to 1 Div. 1 Brig. (above) | |
| Seventh Corps | Major General John Dix | |
| Forces at Suffolk | Major General John J. Peck | |
| First Division | Brigadier General Michael Corcoran | |
| First Brigade | Brigadier General Henry D. Terry | |
| 1st Battalion New York Sharpshooters | ||
| 130th New York Infantry Regiment | ||
| 152nd New York Infantry Regiment | Colonel Alonzo Ferguson | |
| 167th Pennsylvania Infantry Regiment | ||
| 11th Rhode Island Infantry Regiment | Colonel George E. Church | |
| 26th Michigan Infantry Regiment | Colonel Judson S. Farrar | |
| Second Brigade | Brigadier General Robert S. Foster | |
| 13th Indiana Infantry Regiment | ||
| 112th New York Infantry Regiment | ||
| 169th New York Infantry Regiment | ||
| 165th Pennsylvania Infantry Regiment | ||
| 166th Pennsylvania Infantry Regiment | ||
| Third Brigade | Colonel Mathew Murphey | |
| 10th New Jersey Infantry Regiment | Colonel Henry O. Ryerson | |
| 155th New York Infantry Regiment | Colonel William McEvily | |
| 164th New York Infantry Regiment | Colonel John E. McMahon | |
| 170th New York Infantry Regiment | Colonel Peter McDermott | |
| 182nd New York Infantry Regiment | Colonel Mathew Murphey | |
| First Division Artillery | ||
| 7th Massachusetts Independent Battery | from 7th Corps Artillery (below) | |
| 19th New York Independent Battery | from 7th Corps Artillery (below) | |
| 4th United States Artillery, Battery D | from 7th Corps Artillery (below) | |
| 4th United States Artillery, Battery L | from 7th Corps Artillery (below) | |
| 2nd Wisconsin Battery | Captain Ernst F. Herzberg | |
| 4th Wisconsin Battery | Captain John F. Vallee | |
| Second Division | Brigadier General George W. Getty | |
| First Brigade | Colonel William R. Pease (to 6/5) Colonel Samuel M. Alford | |
| 10th New Hampshire Infantry Regiment | Colonel Michael T. Donohoe | |
| 3rd New York Infantry Regiment | Colonel Samuel M. Alford (^ 6/5) Major Eldridge G. Floyd | |
| 89th New York Infantry Regiment | Colonel Harrison S. Fairchild | |
| 103rd New York Infantry Regiment | ||
| 117th New York Infantry Regiment | ||
| Second Brigade | Brigadier General Edward Harland | |
| 8th Connecticut Infantry Regiment | Colonel John E. Ward | |
| 11th Connecticut Infantry Regiment | Colonel Griffin A. Stedman | |
| 15th Connecticut Infantry Regiment | Colonel Dexter R. Wright | |
| 16th Connecticut Infantry Regiment | Colonel Francis Beach | |
| Third Brigade | Colonel Arthur H. Dutton | |
| 21st Connecticut Infantry Regiment | Colonel Arthur H. Dutton | |
| 13th New Hampshire Infantry Regiment | Colonel Aaron F. Stevens | |
| 25th New Jersey Infantry Regiment | Colonel Andrew Derrom | |
| 4th Rhode Island Infantry Regiment | Colonel William H.P. Steere | |
| Second Division Artillery | ||
| 1st Pennsylvania Artilery, Battery A | Captain John G. Simpson | |
| 4th United States Artillery, Battery A | ||
| Gurney’s Division | to 4th Corps, 2nd Div., 2nd Brig. (above) | |
| Porter’s Brigade | Colonel Burr Porter | |
| 22nd Connecticut Infantry Regiment | Colonel George S. Burnham | |
| 40th Massachusetts Infantry Regiment | Colonel Burr B. Porter | |
| 141st New York Infantry Regiment | Colonel John Dininny | |
| Hughston’s Brigade | Colonel Robert S. Hughston | to 4th Corps, 2nd Div., 1st Brig. (above) | 
| 127th New York Infantry Regiment | Colonel William Gurney | |
| 142nd New York Infantry Regiment | Colonel Newton M. Curtis | |
| 143rd New York Infantry Regiment | Lieutenant Colonel Horace Boughton | |
| 144th New York Infantry Regiment | Lieutenant Colonel David E. Gregory | |
| Spinola’s Independent Brigade | Brigadier General Francis B. Spinola | from Dept. N.C., District Pimlico | 
| 158th Pennsylvania Infantry Regiment | Colonel David B. McKibbin | |
| 168th Pennsylvania Infantry Regiment | Colonel Joseph Jack | |
| 171st Pennsylvania Infantry Regiment | Colonel Everard Bierer | |
| Wardrop’s Independent Brigade | Colonel David W. Wardop | from Reserve Brigade (below) | 
| 9th Vermont Infantry Regiment | Colonel Edward H. Ripley | |
| 19th Wisconsin Infantry Regiment | Colonel Horace Turner Sanders | |
| Reserve Brigade (Wistar’s Independent Brigade) | Brigadier General Isaac Wistar | |
| 99th New York Infantry Regiment | Colonel David W. Wardop | to Wardrop’s Ind. Brig. (above) | 
| 118th New York Infantry Regiment | to Wardrop’s Ind. Brig. (above) | |
| 9th Vermont Infantry Regiment | Colonel Edward H. Ripley | |
| 19th Wisconsin Infantry Regiment | Colonel Horace Turner Sanders | |
| 16th New York Independent Battery | ||
| 7th Corps Artillery | ||
| 1st Delaware Battery | ||
| 7th Massachusetts Independent Battery | to 1st Div. (above) | |
| 19th New York Independent Battery | to 1st Div. (above) | |
| 3rd Pennsylvania Heavy Artillery | ||
| 4th United States Artillery, Battery D | to 1st Div. (above) | |
| 4th United States Artillery, Battery L | to 1st Div. (above) | |
| Cavalry | ||
| 1st New York Mounted Rifles | ||
| 11th Pennsylvania Cavalry Regiment | ||
| Norfolk District | Brigadier General Egbert L. Viele | |
| 7th New York Independent Battery | Captain Peter C. Regan | |
| 148th New York Infantry Regiment | Colonel William Johnson | |
| 173rd Pennsylvania Infantry Regiment | Colonel Daniel Nagle | |
| 177th Pennsylvania Infantry Regiment | Colonel George B. Wiestling | |
