HARTWOOD CHURCH, August 28, 1863.

Major-General WARREN:

The general guerrillas are again at work. They killed one orderly to-day at 12 m., and captured four others at 1 p. m. Parties are after them. They were last seen three miles southwest of Spotted Tavern. If the telegraph is in working order please telegraph the above to headquarters of Cavalry Corps.

J. KILPATRICK,

Brigadier-General.

[29.]

SPECIAL ORDERS,
HEADQUARTERS OF THE ARMY,
ADJUTANT-GENERAL'S OFFICE, Numbers 393.
Washington, September 1, 1863.

* * *

4. Brigadier General George J. Stannard, U. S. Volunteers, will report for temporary duty to Brigadier-General Canby, commanding, &c., New York City.

* * *

By command of Major-General Halleck:

E. D. TOWNSEND,
Assistant Adjutant-General.

[29.]

HEADQUARTERS ELEVENTH CORPS,
September 12, 1863.

Major-General HUMPHREYS,

Chief of Staff, Army of the Potomac:

GENERAL: Last night I heard that Gregg's pickets were attacked. The peculiar manner of the citizens in this quarter, the lurking of spies and guerrillas in the neighbhorhood, and the extreme quiet of the enemy have excited my suspicion that a raid or larger movement of the enemy is contemplated. I have sent scouting, parties through Thoroughfare Gap toward Salem, toward Aldie, to Brentsville, and that region. In case of a raid on Manassas Junction, Bristoe, Cattlett's or Warenton Junction, please remember I have a small force and much stationed; in fact, but three brigades and one regiment altogether.

Have you any specific instructions for me in either case?

C. O. HOWARD,

Major-General.

[29.]

HEADQUARTERS ELEVENTH CORPS,
September 12, 1863-6 p. m.

General A. A. HUMPHREYS,

Chief of Staff, Army of the Potomac:

GENERAL: Scouts from Bristersburg, Stafford Springs, Turner's Store, Howison's Ford, and Brentsville report no enemy or guerrillas. They could only learn of two rebel scouts passing through Stafford Springs night before last. Our cavalry left Bristersburg this a. m. The scouts from Aldie report that eighteen of Mosby's men returned from Centerville through Hopewell Gap last night, having two Union prisoners in their charge; also that s sqad of six men came down from Bull Run Mountains this a. m., advancing toward Suddley Springs and Centerville. They report no force at Aldie. Lieutenant