The force on the peninsula between the Potomac and Rappahannock consists of three regiments of infantry and one of cavalry, with four guns, near King George Court-House. They have a picket line from Lamb's Creek Church to the Potomac, and are taking large quantities of forage to the opposite side of the river from Port Conway.

Colonel Gregg reports all quiet and no change in his front. Jenkins' and Jones' brigades of cavalry are near Sperryville. General Buford reports no changes in his front.

Very respectfully,

A. PLEASONTON,

Major-General, Commanding.

HEADQUARTERS CAVALRY CORPS, August 28, 1863.

Colonel JOHN I. GREGG,
Commanding Second Cav. Div., Watery Mountain Station:

It is rumored that Hampton with 5,000 cavalry has started from Culpeper Court-House to make a raid into Maryland.

The major-general commanding directs that you will send out and see if they are moving any force in that direction, and in what strength, and send in all the information you can gain. Send out scouts through the country to obtain all information; send word what force there is at Sperryville.

[C. ROSS SMITH,]

Lieutenant-Colonel, and Chief of Staff.

HEADQUARTERS CAVALRY CORPS, August 28, 1863.

Brigadier-General KILPATRICK,
Commanding Third Cav. Div., Hartwood Church:

The major-general commanding the army directs that no communication whatever be held between your pickets and the enemy's.

The general commanding also understands that there was a rebel mail captured by some of our command a few days ago and was never sent in.

He directs hereafter that anything of that kind that is captured be forwarded at once.

[C. ROSS SMITH,]

Lieutenant-Colonel, and Chief of Staff.

WARRENTON, August 28, 1863.

Colonel C. ROSS SMITH,

Chief of Staff:

My information is that Jenkins' and Jones' brigades are at Sperryville. The enemy have a strong picket at Gaines' Cross-Roads.

J. IRVIN GREGG.