HEADQUARTERS ARMY OF THE POTOMAC,
April 18, 1864-11. 30 a. m.

Brigadier General D. McM. GREGG:

Information has been received that a force of the enemy's cavalry, estimated from one to three regiments, in in the vicinity of Jefferson. The major-General commanding direct that you send a brigade immediately to attack and drive off this force. Inform Major-General Sheridan of this order. He is supposed to be at Warrenton.

A. A. HUMPHREYS,

Major-General and Chief of Staff.

FAIRFAX COURT-HOUSE, April 18, 1864.

(Received 2. 30 p. m.)

Lieutenant Colonel J. H. TAYLOR,

Assistant Adjutant-General:

I sent out early this morning a large scout of cavalry and infantry into the vicinity of Upperville.

R. O. TYLER,

Brigadier-General.

HEADQUARTERS SECOND CAVALRY DIVISION,
Warrenton, Va., April 18, 1864.

Colonel SMITH,

Chief of Staff, Cavalry Corps:

The brigade sent from this division could not cross the Rappahannock at Sulphur Springs. Some dismounted men were crossed and they went to Jefferson without finding or hearing anything of the enemy. I have sent a force to Waterloo, if possible, or to continue the stream beyond Waterloo to effect a crossing where it is practicable to do so.

D. McM. GREGG,

Brigadier-General, Commanding.

CHARLESTON, W. VA, April 18, 1864-2. 30 p. m.

(Received 6. 20 p. m.)

Lieutenant General U. S. GRANT:

It will be impossible for me to be supplied with the requisite number of horses to mont my men within the proper time with the present facilities in this department. Will you authorize me to purchase horses in Ohio for that purpose? Deserters report all Longstreet's corps gone in direction of Richmond except one division, which is near Cumberland Gap.

GEORGE CROOK,

Brigadier-General.

CUMBERLAND, MD., April 18, 1864-9 p. m.

(Received 11. 40 p. m.)

General RAWLINS,

Chief of Staff, Culpeper:

GENERAL: I have examined as fully as possible here the present state of the roads to Beverly and from Beverly in all directions, and