HEADQUARTERS MIDDLE MILITARY DIVISION,
Harper's Ferry, August 8, 1864-11.50 p. m.

Major-General HALLECK,

Chief of Staff, Washington, D. C.:

The following is the substance of an official dispatch just received from Brigadier-General Averell, dated Moorefield, August 7, 1864:

General Averell overtook the enemy near Moorefield yesterday. They were under the command of McCausland, Johnson, Gilmore, and McNeill, about 3,000 strong. Attacked him at daylight on the 7th instant; number of enemy killed and wounded not known, but large. General Averell captured 3 battle-flags and all the enemy's artillery (4 pieces), 420 prisoners, including 6 field and staff, 32 cavalry officers, also a large quantity of small-arms, and 400 horses and equipments. Colonel Peters, Twenty-first Virginia (rebel) Cavalry, mortally wounded. The enemy were broken and pursued for ten miles. Our loss was 7 killed and 21 wounded. Major Conger and Lieutenant Clark, Third Virginia Cavalry, were killed whilst trying to penetrate the enemy's lines. McCausland fled to the mountains. General Averell says that the enemy's command is greatly scattered.

P. H. SHERIDAN,

Major-General, Commanding.

GENERAL ORDERS,
HDQRS. MIDDLE MILITARY DIVISION, No. 2.
Harper's Ferry, W. Va., August 8, 1864.

The troops under the command of Brevet Major General George Crook, serving in this army, will be designated and known as the Army of Western Virginia.

By command of Major-General Sheridan:

J. W. FORSYTH,

Lieutenant-Colonel and Chief of Staff.

GENERAL ORDERS,
HDQRS. MIDDLE MILITARY DIVISION, No. 3.
Harper's Ferry, W. Va., August 8, 1864.

The headquarters Department of Western Virginia, Major General D. Hunter commanding, will be established without delay at Cumberland, Md.

By command of Major-General Sheridan:

E. B. PARSONS,

Assistant Adjutant-General.

[AUGUST 8, 1864.-For General Orders, No. 4, Middle Military Division, announcing Brigadier General A. T. A. Torbert as chief of cavalry, see p. 501.]

SPECIAL ORDERS,
HDQRS. MIDDLE MILITARY DIVISION,

No. 2.
Harper's Ferry, W. Va., August 8, 1864.

Leave of absence for the period of twenty days is hereby granted to the following-named officer: Major General David Hunter, U. S. Volunteers.

By command of Major-General Sheridan:

E. B. PARSONS,

Assistant Adjutant-General.