United States Army


< to April • May 1862 • to June >

Commanded by Major General George B. McClellan

On May 18, 1862, the Third and Fourth Corps gave up one of their three divisions to serve as the nucleus of a re-created Fifth Corps and a newly-created Sixth Corps.

Headquarters

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 Lt. Colonel Benjamin C. Butler from 4th Corps, 3rd Div.
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 Brigadier General Daniel Woodbury
15th New York Engineer Regiment
50th New York Engineer Regiment Colonel Charles B. Stuart
Regular Engineer Battalion
Siege Artillery
1st Connecticut Heavy Artillery
Infantry Reserve Brigadier General George Sykes
2nd United States Infantry Regiment to 5th Corps, 2nd Div., 2nd Brig.
3rd United States Infantry, 6 Cos. to 5th Corps, 2nd Div., 1st Brig.
4th United States Infantry Regiment to 5th Corps, 2nd Div., 1st Brig.
6th United States Infantry Regiment to 5th Corps, 2nd Div., 2nd Brig.
10th United States Infantry, 4 Cos.  to 5th Corps, 2nd Div., 2nd Brig.
11th United States Infantry Regiment to 5th Corps, 2nd Div., 2nd Brig.
12th United States Infantry Regiment to 5th Corps, 2nd Div., 1st Brig.
14th United States Infantry Regiment to 5th Corps, 2nd Div., 1st Brig.
17th United States Infantry, 4 Cos.  to 5th Corps, 2nd Div., 2nd Brig.
5th New York Infantry Regiment to 5th Corps, 2nd Div., 1st Brig.

Second Corps

Brigadier General Edwin V. Sumner (to Maj. Gen. 5/5)
First Division Brigadier General Israel B. Richardson
Second Division Brigadier General John Sedgwick

Third Corps

Brigadier General Samuel P. Heintzelman (to Maj. Gen. 5/5)
First Division Brigadier General Fitz John Porter to 5 Corps, 1 Div. (below)
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
Second Division Brigadier General William F. Smith to 6 Corps, 2 Div. (below)
Third Division Brigadier General Silas Casey

Fifth Corps

Brigadier General Fitz John Porter recreated 5/18
First Division Brigadier General George W. Morrell (to 6/30) from 3 Corps, 1 Div. (above)
Second Division Brigadier General George Sykes
Artillery Reserve Colonel Henry J. Hunt from unattached (below)

Sixth Corps

Major General William B. Franklin
First Division Brigadier General Henry Slocum from Dept. Rappahannock, 1 Div.
Second Division Brigadier General William F. Smith from 4 Corps, 2 Div. (above)

Cavalry Reserve

Brigadier General Philip St. George Cooke
First Brigade Colonel William H. Emory
5th United States Cavalry Regiment
6th United States Cavalry Regiment Major Lawrence Williams
6th Pennsylvania Cavalry Regiment Colonel Richard H. Rush
2nd Brigade Colonel George A.H. Blake
 1st United States Cavalry Regiment Lieutenant Colonel William N. Grier
 8th Pennsylvania Cavalry Regiment
Unattached
4th Pennsylvania Cavalry Regiment Colonel David Campbell (to 5/12)
Colonel James H. Childs
to McCall’s Div., Dept. Rappahannock

Artillery Reserve

Colonel Henry J. Hunt to 5th Corps 
1st New York Artillery Bn., Battery A Captain Thomas H. Bates to 5 Corps, Art. Res., 2 Brig.
1st New York Artillery Bn., Battery B Captain Rufus T. Pettit to 5 Corps, Art. Res., 3 Brig.
1st New York Artillery Bn., Battery C to 5 Corps, Art. Res., 3 Brig.
1st New York Artillery Bn., Battery D Captain Thomas W. Osborn to 5 Corps, Art. Res., 3 Brig.
5th New York Independent Battery to 5 Corps, Art. Res.
1st United States Artillery, Battery E to 5 Corps, Art. Res., 2 Brig.
1st United States Artillery, Battery G to 5 Corps, Art. Res., 2 Brig.
1st United States Artillery, Battery K to 5 Corps, Art. Res., 2 Brig.
2nd United States Artillery, Battery A to 5 Corps, Horse Art., 1 Brig.
2nd United States Artillery, Battery B to 5 Corps, Horse Art., 1 Brig.
2nd United States Artillery, Battery E to 5 Corps, Res. Art., 5 Brig.
2nd United States Artillery, Battery L to 5 Corps, Horse Art., 1 Brig.
2nd United States Artillery, Battery M to 5 Corps, Horse Art., 1 Brig.
3rd United States Artillery, Batteries C&G to 5 Corps, Horse Art., 1 Brig.
3rd United States Artillery, Batteries F&K to 5 Corps, Res. Art., 5 Brig.
3rd United States Artillery, Batteries L&M to 5 Corps, 2 Div. Artillery
4th United States Artillery, Battery G to 5 Corps, Art. Res., 2 Brig
4th United States Artillery, Battery K to 3 Corps Artillery
5th United States Artillery, Battery A to 5 Corps, Art. Res., 2 Brig
5th United States Artillery, Battery I to 5 Corps, 2 Div. Artillery
5th United States Artillery, Battery K to 5 Corps, Art. Res., 2 Brig
5th United States Artillery, Battery M to 4 Corps Artillery