U.S. Army

Military District of Washington

Brigadier General James Wadsworth

Whipple's Division

Bde. Gen. Amiel W. Whipple

created August 1862

Bde. Gen. Abram S. Piatt

Unattached

Casey's Provisional Brigade

Major General Silas Casey

established August

15th Connecticut Infantry Regiment

from New Haven 8/28

Keystone (Pennsylvania) Battery

from Philadelphia 8/13

Defences North of the Potomac

Lt. Colonel J. A. Haskins

18th Maine Infantry Regiment

from Maine

19th Maine Infantry Regiment

from Maine 8/27

17th Michigan Infantry Regiment

from Michigan

113th New York Infantry Regiment

from New York

117th New York Infantry Regiment

from New York

138th New York Infantry Regiment

from New York

136th Pennsylvania Infantry Regiment

from Pennsylvania

137th Pennsylvania Infantry Regiment

from Pennsylvania

5th Battalion New York Heavy Artillery

from New York

6th Battalion New York Heavy Artillery

from New York

7th Battalion New York Heavy Artillery

from New York

2nd Pennsylvania Heavy Artillery

from unassigned artillery (see below)

Sturgis' Brigade

Bde. Gen. Samuel Sturgis

9th Rhode Island Infantry Regiment

mustered out 9/2

10th Rhode Island Infantry Regiment

mustered out 9/1

71st New York State Militia

63rd Indiana Infantry Regiment

to Whipple's Div., Piatt's Bde.

17th United States Infantry Regiment

19th United States Infantry Regiment

8th Massachusetts Battery

to 9th Corps Artillery

Unassigned Infantry

2nd District of Columbia Inf. Regiment

19th Maine Infantry Regiment

from Maine

10th New Jersey Infantry Regiment

69th New York State Militia

86th New York Infantry Regiment

to Whipple's Div., Piatt's Bde.

26th Pennsylvania Infantry Regiment

27th Pennsylvania Infantry, Company F

from Army Va., 1st Corps, 1st Div., 1st Bde.

91st Pennsylvania Infantry Regiment

to 5th Corps, 3rd Div., 1st Bde.

135th Pennsylvania Infantry Regiment

from Pennsylvania

136th Pennsylvania Infantry Regiment

from Pennsylvania

143rd Pennsylvania Infantry Regiment

from Pennsylvania

149th Pennsylvania Infantry Regiment

from Pennsylvania

150th Pennsylvania Infantry Regiment

from Pennsylvania

151st Pennsylvania Infantry Regiment

from Pennsylvania

Unassigned Artillery

1st Connecticut Heavy Artillery

from Army Potomac Siege Artillery

1st New York Artillery, Battery C

9th New York Independent Battery

16th New York Independent Battery

17th New York Independent Battery

from New York

1st Ohio Artillery, Battery H

2nd Pennsylvania Heavy Artillery

to Defences North of the Potomac (see above)

10th Rhode Island Artillery Battery

mustered out

West Virginia Artillery, Battery A

West Virginia Artillery, Battery B

Unassigned Cavalry

6th New York Cavalry Regiment

to 9th Corps Cavalry

10th New York Cavalry Regiment

to Army Va., 3rd Corps Cavalry

11th New York Cavalry Regiment

2nd Pennsylvania Cavalry Regiment

to Army Va., 2nd Corps, Buford's Cavalry Bde.

12th Pennsylvania Cavalry Regiment

5th United States Cavalry detachment

5th United States Cavalry Company L