[Indorsement.]

HEADQUARTERS CAVALRY DIVISION,
Camp Stoneman, July 13, 1864-6 p. m.

Respectfully forwarded.

W. GAMBLE,

Colonel, Commanding Cavalry.

HDQRS. DEPT. OF WASHINGTON, 22nd ARMY CORPS,
July 13, 1864.

Captain PIERCE,

Commanding Detachment Eighth Illinois Cavalry:

CAPTAIN: The major-general commanding directs that you remain in your present position, and furnish to these headquarters such information of the movements of the enemy as you can obtain.

Very respectfully, captain, your most obedient servant,

J. H. TAYLOR,

Chief of Staff and Assistant Adjutant-General.

HDQRS. DEPT. OF WASHINGTON, 22nd ARMY CORPS,
July 13, 1864.

Colonel WILLIAM GAMBLE,

Commanding at Camp Stoneman:

COLONEL: The major-general commanding directs that you send any available mounted men you now have in camp to Tennallytown, to report to Colonel Lowell, Second Massachusetts Cavalry. Send no more to General Doubleday.

Very respectfully, your most obedient servant,

J. H. TAYLOR,

Chief of Staff and Assistant Adjutant-General.

ALEXANDRIA, July 13, 1864.

(Received 9 a. m.)

Colonel TAYLOR,

Assistant Adjutant-General:

COLONEL: My men have patrolled to Falls Church, Annandale, and Accotink. They report no enemy.

H. H. WELLS,

Lieutenant Colonel and Prov. General, Defenses of the Potomac.

HDQRS. DEPT. OF WASHINGTON, 22nd ARMY CORPS,
July 13, 1864.

Brigadier General JOHN P. SLOUGHT,

Military Governor of Alexandria:

The enemy has disappeared from the Maryland front, and is reported to have crossed the Potomac above, near Muddy Branch. Vigilance is needed.

Respectfully,

J. H. TAYLOR,

Chief of Staff and Assistant Adjutant-General.