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

Third Division(until 8/5)
First Division (after 8/5)

Brigadier General Philip Kearney

The Third Division was redesignated as the First Division on August 5th, 1862

First Brigade

Bde. Gen. John C. Robinson

20th Indiana Infantry Regiment

Colonel William L. Brown (k)

Major John Wheeler

63rd Pennsylvania Infantry Regiment

Colonel Alexander Hays (w)

Captain James F. Ryan (w)

105th Pennsylvania Infantry Regiment

Lt. Colonel C. A. Craig (w)

Major J. W. Greenwalt

87th New York Infantry Regiment

Colonel Stephen A. Dodge

Second Brigade

Brigadier General David B. Birney

3rd Maine Infantry Regiment

Captain Moses B. Lakeman

4th Maine Infantry Regiment

Colonel Elijah Walker

Colonel Garrett W. Dyckman

Colonel J. H. Hobart Ward

Colonel Thomas W. Egan

101st New York Infantry Regiment

Lt. Colonel Nelson A. Gesner

57th Pennsylvania Infantry Regiment

Major William Birney

Third Brigade

Colonel Orlando M. Poe (2 MI)

2nd Michigan Infantry Regiment

Lt. Colonel Louis Dilman

3rd Michigan Infantry Regiment

Colonel Stephen G. Champlain (w)

Major Byron R. Pierce

5th Michigan Infantry Regiment

Captain William Wakenshaw

37th New York Infantry Regiment

Colonel Samuel B. Hayman

99th Pennsylvania Infantry Regiment

Colonel Asher S. Leidy

Artillery

1st Rhode Island Artilery, Battery E

Captain George E. Randolph

from 3rd Corps Artillery

6th Maine Battery

Captain Freeman McGilvery

from Army Va., 2nd Corps, 2nd Div.

1st United States Artillery, Battery K

Captain William M. Graham

from 5th Corps, Artillery Reserve

3rd United States Artillery, Batteries F&K

from 5th Corps, Artillery Reserve