CIRCULAR.] HEADQUARTERS MIDDLE MILITARY DIVISION, Harrisonburg, September 27, 1864.

Corps commanders will have their commands in readiness to march at 5 o'clock to-morrow, September 28, 1864. Further instructions will be sent in the morning.

By command of Major-General Sheridan:

JAS. W. FORSYTH,

Lieutenant-Colonel and Chief of Staff.

WASHINGTON, September 27, 1864.

Major-General AUGUR:

Please furnish me to-morrow morning an abstract of the troops available for the defense of the railroads to Manassas Gap and the Rappahannock, based on the supposition of leaving in the works north of the Potomac simply a guard.

H. W. HALLECK,

Major-General and Chief of Staff.

ALEXANDRIA, September 27, 1864. (Received 7.55 p. m.)

Colonel TAYLOR,

Chief of Staff:

COLONEL: I have the honor to report that last night I sent a small detachment toward Dranesville to look after some guerrillas said to be in that neighborhood. The detachment returned to-day, capturing three guerrillas. The patrols report all quiet to-day.

H. H. WELLS,

Lieutenant-Colonel and Provost-Marshal-General.

ORDERS.] HEADQUARTERS SIXTH ARMY CORPS, September 27, 1864.

This corps will be in readiness to march at 5 o'clock to-morrow a. m., in accordance with orders from headquarters Middle Military Division. Further instructions will be sent in the morning.

By command of Major-General Wright:

C. A. WHITTIER,

Major and Acting Assistant Adjutant-General.

HEADQUARTERS MIDDLE MILITARY DIVISION, September 27, 1864.

Brevet Major-General EMORY,
Commanding Nineteenth Corps:

GENERAL: The major-general commanding directs that you detail one regiment as a guard for the train going to Winchester to-morrow morning. He desires that the commanding officer report here in person to-night.

Very respectfully, your obedient servant,

C. KINGSBURY, JR.,

Assistant Adjutant-General.