HEADQUARTERS ARMY OF THE POTOMAC, October 18, 1863-11 a. m.

Commanding Officer First Corps:

The major-general commanding directs me to inform you that General Sedgwick reports that the enemy in his front have moved off and that it is not necessary for you to hold your corps under arms.

Very respectfully, &c.,
A. A. HUMPHREYS,

Major-General, and Chief of Staff.

HEADQUARTERS ARMY OF THE POTOMAC, October 18, 1863-11. 15 a. m.

Commanding Officer Second Corps:

The major-general commanding directs me to inform you that General Sedgwick reports that the enemy in his front and on his right had moved off, and that apparently it was not a strong force. At present, therefore, there is no probability of your being required to move in the direction of Sedgwick.

Very respectfully, &c.,

A. A. HUMPHREYS,

Major-General, and Chief of Staff.

OCTOBER 18, 1863-11. 15 a. m.

Commanding Officer Third Corps:

The major-general commanding directs me to inform you that General Sedgwick reports that the enemy in his front and on his right has moved off. If your troops are under arms, they need not be held so longer.

A. A. HUMPHREYS,

Major-General, and Chief of Staff.

HDQRS. CAVALRY CORPS, ARMY OF THE POTOMAC, October 18, 1863-12. 15 p. m.

Brigadier-General GREGG,
Commanding Second Cavalry Division:

Draw in your pickets and move with your command to Vienna, where you will act in concert with Colonel Lowell's command and push after teh enemy's cavalry, reported to be making a raid on our right and rear. Acknowledge receipt.

A. PLEASONTON,

Major-General, Commanding.

HEADQUARTERS SECOND CORPS, October 18, 1863-5 p. m.

Major-General HUMPHREYS,

Chief of Staff, Army of the Potomac:

The pontoon bridge has just been completed at Blackburn's Ford. I have thrown two regiments as skirmishers three-quarters of a mile beyond the run. They have met nothing, and no enemy is within