Gustavus A. De Russy to Brigadier-General Gregg, August 10, 1863

August 10, 1863. Brigadier-General GREGG, RAs: Commanding Second Cavalry Division : GENERAL: The major-general commanding desires me to say you:

need not persist in crossing until further orders. C. ROSS SMITH,

Lieutenant-Colonel, and Chief of Staff

HEADQUARTERS CAVALRY CoRPs, August 10, 1863—2.30 p. m.

Brigadier-General MERRITT, The original order as regards your brigade will be carried out,

eporping. as regards yourself. ou will remain in command of

the division until General Buford’s return. C. ROSS SMITH,

Lieutenant-Colonel, and Chief of Staff.

Hpgrs. Der. or Washington SoUTH OF Potomac,

August 10, 1863. Lieut. Col. J. H. TAyLor, It is reported that one of our cavalry pickets was fired on last night while on duty near Falls Church. A Mr. Reed, resident of that place, says he knows that Mosby’s headquarters are only about 5 miles from Falls Church, where he had about 40 men. My own cavalry force is not sufficient to send out a large enough party to verify this information and keep up the regular nightly patrols.

Very respectfully,