HEADQUARTERS ARMY OF THE POTOMAC.

July 13, 1864-8.30 a.m. (Received 9.30 a.m.)

Major-General SHERIDAN;

Cavalry Corps:

General Gregg will remain in his present position, on the left of the army, near Lee's Mill. The commanding general directs that you have his supplies of forage, rations, &c., kept up.

A. A. HUMPHREYS.

Major-General and Chief of Staff.

HEADQUARTERS CAVALRY CORPS,
July 13, 1864-11.15 a.m.

General HUMPHREYS:

Dispatch received. Supplies will be sent to General Gregg at once.

P. H. SHERIDAN.

Major-General.

HEADQUARTERS SECOND DIVISION, CAVALRY CORPS,
July 13, 1864

Major General A. A. HUMPHREYS.

Chief of Staff, Army of the Potomac:

GENERAL: The forage for the horses of this division will expire this evening and the rations to-morrow evening. If my commanding is to remain in its present position please inform me, that I may apply to Major-General Sheridan to have additional supplies sent. The supply train of this division is at Light-House Point.

Very respectfully,

D. McM. GREGG,

Brigadier-General of Volunteers, Commanding Second Division.

HEADQUARTERS ARMY OF THE POTOMAC.

July 13, 1864-8.25 a.m.

Brigadier-General GREGG,
Commanding Cavalry Division:

Your dispatch respecting rations and forage is received. The commanding general directs me to say you will remain in your present position, and will therefore, keep yourself supplied with rations, forage, and ammunition.

A. A. HUMPHREYS.

Major-General and Chief of Staff.

HDQRS. SECOND Brigadier SECOND DIV., CAVALRY CORPS,

July 13, 1864

Captain H. C. WEIR:]

CAPTAIN: Captain Hughes has returned. Reports that Colonel Robinson reached Proctor's house, found no enemy, nor has there been any there. A colored woman said a force of 2,000 or 3,000 cavalry were