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Commanded by Major General George B. McClellan
McCall’s Pennsylvania Reserves Division was assigned to the 5th Corps as its 3rd Division on June 18, 1862.
Headquarters |
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| Guards & Orderlies | ||
| McClellan Dragoons (Illinois) | ||
| Sturgis (Illinois) Rifles | ||
| Oneida (New York) Cavalry Company | ||
| 4th United States Cavalry, Cos. A & E | ||
| Provost Guard | Colonel Andrew Porter | |
| 93rd New York Infantry, Cos. AFH&K | Lieutenant Colonel Benjamin C. Butler | |
| 8th United States Infantry, Cos. F&G | ||
| 19th United States Infantry Cos. G&H | Captain Edmund L. Smith (Co. G) Captain Henry S. Welton (Co. H) |
from Indianapolis |
| 2nd United States Cavalry Regiment | ||
| Engineer Brigade | ||
| 15th New York Engineer Regiment | ||
| 50th New York Engineer Regiment | ||
| Regular Engineer Battalion | ||
| Siege Artillery | ||
| 1st Connecticut Heavy Artillery | ||
Second Corps |
Major General Edwin V. Sumner | |
| First Division | Brigadier General Israel B. Richardson | |
| Second Division | Brigadier General John Sedgwick | |
Third Corps |
Major General Samuel P. Heintzelman | |
| Second Division | Brigadier General Joseph Hooker | |
| Third Division | Brigadier General Philip Kearney | |
Fourth Corps |
Brigadier General Erasmus Keyes | |
| First Division | Brigadier General Darius N. Couch | |
| Third/Second Division | Brigadier General Silas Casey | redesignated 2nd Division 6/7 |
Fifth Corps |
Brigadier General Fitz John Porter | recreated 5/18 |
| First Division | Brigadier General George Morrell (to 6/30) | from 3 Corps, 1 Div. (above) |
| Second Division | Brigadier General George Sykes | |
| Third Division | Brigadier General George McCall (to 6/30) Brigadier General Truman Seymour |
from Dept. Rappahannock, 2 Div. 6/18 |
Sixth Corps |
Major General William B. Franklin | |
| First Division | Brigadier General Henry Slocum | |
| Second Division | Brigadier General William F. Smith | |
Cavalry Reserve |
Brigadier General Philip St. George Cooke | |
| First Brigade | Colonel William H. Emory | |
| 5th United States Cavalry Regiment | Captain Charles J. Whiting (w&c) Captain Joseph H. McArthur |
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| 6th United States Cavalry Regiment | Major Lawrence Williams | to 2nd Brig. |
| 6th Pennsylvania Cavalry Regiment | Colonel Richard H. Rush | to 2nd Brig. |
| 2nd Brigade | Colonel George A.H. Blake (w 6/27) | |
| 1st United States Cavalry Regiment | Lieutenant Colonel William N. Grier | |
| 8th Pennsylvania Cavalry Regiment | Captain August Kautz | |