United States Army > Army of the Potomac


March 1862 • to April >

Commanded by Major General Irvin McDowell

The First Corps was created on March 3, 1862 and announced March 13, 1862. It was transferred from the Army of the Potomac to  the Department of the Rappahannock on April 4, 1862.

1st Division

Brigadier General William B. Franklin From Franklin’s Div. 3/3
First Brigade Brigadier General Philip Kearney
1st New Jersey Infantry Regiment Colonel Alfred T. A. Torbert
2nd New Jersey Infantry Regiment Colonel Isaac M. Tucker
3rd New Jersey Infantry Regiment Colonel George W. Taylor
4th New Jersey Infantry Regiment Colonel James H. Simpson
Second Brigade Brigadier General Henry W. Slocum
5th Maine Infantry Regiment Colonel Nathaniel J. Jackson
16th New York Infantry Regiment Colonel Thomas Davies (to BG 3/7)
Colonel Joseph Howland
27th New York Infantry Regiment Colonel Joseph J. Bartlett
96th Pennsylvania Infantry Regiment Colonel Henry L. Cake
Third Brigade Brigadier General John Newton
18th New York Infantry Regiment Colonel William H. Young
31st New York Infantry Regiment Colonel Calvin E. Pratt
32nd New York Infantry Regiment Colonel Roderick Matheson
95th Pennsylvania Infantry Regiment Colonel John M. Gosline
Division Cavalry and Artillery
1st Massachusetts Battery
Battery A, 1st New Jersey Artillery Captain William Hexamer
Battery F, 1st New York Artillery
Pennsylvania Independent Battery D Captain George W. Durell from McDowell’s Div.;
to Rappahannock, 1 Div.
1st Rhode Island Artillery, Battery D from McDowell’s Div.
Battery D, 2nd United States Artillery
Battery M, 2nd United States Artillery
1st New York Cavalry Regiment Colonel Andrew T. McReynolds

2nd Division

“Pennsylvania Reserves”

Brigadier General George A. McCall from McCall’s Div. 3/3
First Brigade Brigadier General John Reynolds
1st Pennsylvania Reserves Colonel Richard B. Roberts
2nd Pennsylvania Reserves Colonel William McCandless
5th Pennsylvania Reserves Colonel Seneca G. Simmons
8th Pennsylvania Reserves Colonel George S. Hays
13th Pennsylvania Reserves Colonel Hugh McNeil from 2nd Brigade (below) 3/10
Second Brigade Brigadier General George Meade
3rd Pennsylvania Reserves Colonel Horatio G. Sickel
4th Pennsylvania Reserves Colonel Albert L. Magilton
7th Pennsylvania Reserves Colonel Elisha B. Harvey
11th Pennsylvania Reserves Colonel Thomas F. Gallagher
13th Pennsylvania Reserves Colonel Hugh McNeil to 1st Brigade (above) 3/10
Third Brigade Brigadier General Edward O. C. Ord
6th Pennsylvania Reserves Colonel William Sinclair
9th Pennsylvania Reserves Colonel Conrad F. Jackson
10th Pennsylvania Reserves Colonel John S. McCalmont
12th Pennsylvania Reserves Colonel John H. Taggart
Division Artillery and Cavalry
Battery A, 1st Pennsylvania Artillery
Battery B, 1st Pennsylvania Artillery
Battery G, 1st Pennsylvania Artillery
Battery C, 5th United States Artillery
1st Pennsylvania Cavalry Colonel George D. Bayard

3rd Division

Brigadier General Rufus King  from McDowell’s Division 3/3
First Brigade Brigadier General Christopher C. Augur
22nd New York Infantry Regiment Colonel Walter Phelps
24th New York Infantry Regiment Colonel Timothy Sullivan
30th New York Infantry Regiment Colonel Edward Frisby
14th New York State Militia Colonel Alfred M. Wood
2nd United States Sharpshooter Regiment Colonel Henry Post from Washington DC defences
Second Brigade Brigadier General James S. Wadsworth (to 3/17)
Brigadier General Marsena Patrick
12th New York Infantry Regiment Colonel Henry Weeks  to 3 Brig., 1 Div., 3rd Corps 3/13
21st New York Infantry Regiment Colonel William F. Rogers
23rd New York Infantry Regiment Colonel Henry C. Hoffman
35th New York Infantry Regiment Colonel Newton B. Lord
80th New York Infantry Regiment Colonel George W. Pratt
Third Brigade Colonel Lysander Cutler
2nd Wisconsin Infantry Regiment Colonel Edgar O’Connor
6th Wisconsin Infantry Regiment
7th Wisconsin Infantry Regiment Colonel William W. Robinson
19th Indiana Infantry Regiment Colonel Solomon Meredith
Division Artillery and Cavalry
1st New Hampshire Artillery, Battery D
4th United States Artillery, Battery B
2nd New York Cavalry Regiment Colonel Judson Kilpatrick