FAIRFAX STATION, November 12, 1864.

Lieutenant Colonel J. H. TAYLOR:

COLONEL: The last train left Manassas Junction at 8.30 o'clock. The Thirteenth and Sixteenth New York Cavalry, have started. All that I left at Manassas was the Eighth Illinois Cavalry, which will leave early in the morning.

Respectfully,

JNO. P. SLOUGH,

Brigadier-General.

NOVEMBER 13, 1864.

Captain McKINLEY,

Acting Assistant Adjutant-General:

Comply with the request at once. Send a strong regiment.

GEORGE CROOK,

Major-General.

[Inclosure.]

4 P. M.

Colonel FORSYTH:

Direct General Crook to send one regiment immediately to the point at which the Front Royal pike crosses the Opequon to hold it. Everything is now removed from there.

SHERIDAN,

General.

HARPER'S FERRY, W. VA., November 13, 1864.

(Received 6 p. m.)

Major-General HALLECK,

Chief of Staff:

My scouts report no force in Loudoun, except Mosby's and White's commands. A part of the force with Mosby was originally of Rosser's brigade, which accounts for the false report.

Respectfully,

JOHN D. STEVENSON,

Brigadier-General.

MARTINSBURG, November 13, 1864.

Brigadier-General STEVENSON:

GENERAL: Captain Claflin, Sixth U. S. Cavalry, just in from the front, reports a cavalry fight yesterday. General Powell drove the enemy's (Lomax's) cavalry beyond Front Royal, capturing two pieces of artillery and 150 prisoners.

J. A. J. LIGHTBURN,

Brigadier-General.