HEADQUARTERS MOUNTAIN DEPARTMENT, April 15, 1862.

Brigadier General R. H. MILROY, Monterey:

Lieutenant-Colonel Harris has been ordered to send detachments from Weston, Camp Canaan, Buckhannon, and Bulltown on Thursday next to break up the guerrilla organization in Webster County. Forces from Summerville and Sutton will co-operate with him.

J. C. FREMONT.

CHARLESTON, April 15, 1862.

Colonel GEORGE CROOK, Summerville:

Lieutenant-Colonel Harris will on Thursday send a detachment from Weston to attempt the destruction of the guerrilla organization in Webster Country. You are ordered to send detachments on same day and to notify the post commandant of Sutton to co-operate. All the parties will place themselves in communication with each other and act in concert, moving without baggage. Send 200 men, and make the effort to surround and destroy the bushwhackers.

Above instructions received to-day from Wheeling.

By command of J. D. Cox, brigadier-general, commanding:

G. M. BASCOM,
Captain and Assistant Adjutant-General.

CHARLESTON, April 15, 1862.

Colonel GEORGE CROOK,

Thirty-sixth Ohio Volunteers, Summerville:

I am directed by General Cox to send the following more minute information in regard to the expedition to Webster County, ordered this morning:

One hundred men from Buckhannon and Camp Canaan will proceed to Addison, in Webster County, on Thursday. A detachment will go from Bulltown to Addison on the same day. Twenty-five men from Weston will join 50 men at Sutton and proceed on Thursday, so as to join the other detachment at Addison on Friday afternoon. See that your party co-operates with them.

Very respectfully,

G. M. BASCOM,

Captain and Assistant Adjutant-General.

SPECIAL ORDERS,
WAR DEPARTMENT, ADJT. General 'S OFFICE,

Numbers 82.
Washington, April 15, 1862.

I. Brigadier General J. B. Ricketts, U. S. Volunteers, will report for duty to Major-General McDowell, commanding Department of the Rappahannock.

* * * * * * *

By order of the Secretary of War:

L. THOMAS,

Adjutant-General.