U.S. Army - Army of the Potomac - Fourth Army Corps

Third Division

Brigadier General Silas Casey

Created March 3, 1862 by order of President Lincoln in General Order Number 101

First Brigade

Brigadier General H. M. Naglee

11th Maine Infantry Regiment

Colonel John C. Caldwell

from Casey's Division, 1st Bde.

56th New York Infantry Regiment

Colonel Charles H. Van Wyck

from Casey's Division, 1st Bde.

100th New York Infantry Regiment

Colonel James M. Brown

from New York 3/10

52nd Pennsylvania Infantry Regiment

Colonel John C. Dodge Jr.

from Casey's Division, 1st Bde.

104th Pennsylvania Infantry Regiment

Colonel William V. H. Davis

from Casey's Division, 1st Bde.

Second Brigade

Brigadier General William H. Keim

96th New York Infantry Regiment

Colonel James Fairman

from New York 3/11

85th Pennsylvania Infantry Regiment

Colonel Joshua B. Howell

from Casey's Division, 2nd Bde.

101st Pennsylvania Infantry Regiment

Colonel Joseph H. Wilson

from Harrisburg 2/28

103rd Pennsylvania Infantry Regiment

Colonel Theodore F. Lehmann

from Harrisburg 2/28

Third Brigade

Brigadier General I. N. Palmer

81st New York Infantry Regiment

Colonel Edwin Rose

from New York 3/5

85th New York Infantry Regiment

Colonel Uriah L. Davis

from Casey's Division, 3rd Bde.

92nd New York Infantry Regiment

Colonel Jonah Sanford

from New York 3/5

93rd New York Infantry Regiment

Colonel John S. Crocker

from New York 3/7

98th New York Infantry Regiment

Colonel William Dutton

from New York 3/8

Artillery

1st New York Artillery, Battery A

from Casey's Division Artillery

1st New York Artillery, Battery H

7th New York Independent Battery

8th New York Independent Battery