enant William D. Fuller
_Second Brigade_.--Captain JOHN C. TIDBALL
Batteries G and E, 1st United States, Captain A. M. Randol
Battery K, 1st United States, Captain Wm. M. Graham
Battery A, 2d United States, Lieutenant John H. Calef
Battery C, 3d United States

ARTILLERY RESERVE.
(1) BRIGADIER-GENERAL R. O. TYLER (disabled)
(2) CAPTAIN JOHN M. ROBERTSON
_First Regular Brigade_.--Captain D. R. RANSOM (wounded)
Battery H, 1st United States, Lieutenant C. P. Eakin
(wounded)
Batteries F and K, 3d United States, Lieutenant J. C.
Turnbull
Battery C, 4th United States, Lieutenant Evan Thomas
Battery C, 5th United States, Lieutenant G. V. Weir
_First Volunteer Brigade_.--Lieut.-Colonel F. McGILVERY
15th New York, Captain Patrick Hart
Independent Battery Pennsylvania, Captain R. B. Ricketts
5th Massachusetts, Captain C. A. Phillips
9th Massachusetts, Captain John Bigelow
_Second Volunteer Brigade_.--Captain E. D. TAFT
Battery B, 1st Connecticut;*
Battery M, 1st Connecticut;*
5th New York, Captain Elijah D. Taft
2d Connecticut, Lieutenant John W. Sterling
[* Not engaged.]
_Third Volunteer Brigade_.--Captain JAMES F. HUNTINGTON
Batteries F and G, 1st Pennsylvania, Captain R. B. Ricketts
Battery H, 1st Ohio, Captain Jas. F. Huntington
Battery A, 1st New Hampshire, Captain F. M. Edgell
Battery C, 1st West Virginia, Captain Wallace Hill
_Fourth Volunteer Brigade_.--Captain R. H. FITZHUGH
Battery B, 1st New York, Captain Jas. McRorty (killed)
Battery G, 1st New York, Captain Albert N. Ames
Battery K, 1st New York (11th Battery attached), Captain
Robt. H. Fitzhugh
Battery A, 1st Maryland, Captain Jas. H. Rigby
Battery A, 1st New Jersey, Lieutenant Augustin N. Parsons
6th Maine, Lieutenant Edwin B. Dow
_Train Guard_.--Major CHARLES EWING Commanding. 4th New Jersey
Infantry.
_Headquarter Guard_.--Captain J. C. FULLER Commanding. Battery
C, 32d Massachusetts.

DETACHMENTS AT HEADQUARTERS ARMY OF THE POTOMAC.
_Command of the Provost-Marshal-General_.--Brigadier-General
M. B. PATRICK
93d New York*
8th United States*
1st Massachusetts Cavalry
2d Pennsylvania Cavalry
Batteries E and I, 6th Pennsylvania Cavalry
Detachment Regular Cavalry
United States Engineer Batt