U.S. Army - Army of the Potomac

Cavalry Corps

Brigadier General Alfred Pleasonton

First Division

Brigadier General John Buford (until 8/15)

Brigadier General Wesley Merritt (after 8/15)

First Brigade

Colonel William Gamble

Second Brigade

Colonel Thomas C. Devin

Reserve Brigade

Brigadier General Wesley Merritt (until 8/12)

Colonel A. Gibbs (after 8/12)

Second Division

Bde. Gen. David McM. Gregg (until 8/24)

Colonel John I. Gregg (after 8/24)

First Brigade

Colonel J. B. McIntosh

Second Brigade

Colonel Pennock Huey (until 8/12)

Colonel John I. Gregg (8/12 - 8/24)

Colonel C. H. Smith (after 8/24)

Third Brigade

Colonel John I. Gregg

discontinued 8/17

Third Division

Bde. Gen. George A. Custer (until 8/4)

Bde. Gen. Jusdson Kilpatrick (after 8/4)

First Brigade

Colonel E. B. Sawyer (until 8/22)

Colonel H. E. Davies (after 8/22)

Second Brigade

Colonel Charles H. Town (until 8/4)

Bde. Gen. George A. Custer (after 8/4)

1st Brigade Horse Artillery

Captain James M. Robertson

..

1st Michigan Artillery, Battery L

Captain Jabez Daniels

to 2nd Bde. Horse Artillery (see below)

6th New York Indpendent Battery

Captain Joseph W. Martin

2nd United States Artillery, Battery D

2nd United States Artillery, Battys. B &L

1st Lieutenant Edward Heaton

2nd United States Artillery, Battery M

1st Lieutenant Alexander C. M. Pennington

4th United States Artillery, Battery A

4th United States Artillery, Battery E

1st Lieutenant Samuel S.Elder

2nd Brigade Horse Artillery

Captain John Caldwell Tidball

..

1st Michigan Artillery, Battery L

Captain Jabez Daniels

from 1st Bde. Horse Artillery (see above)

1st United States Artillery, Batteries E&G

Captain Alanson M. Randol

1st United States Artillery, Battery K

Captain William M. Graham Jr.

2nd United States Artillery, Battery A

2nd Lieutenant John H. Calef

2nd United States Artillery, Battery G

from 6th Corps Artillery

3rd United States Artillery, Battery C

1st Lieutenant William D. Fuller