NORTH MOUNTAIN, July 27, 1863.

(Received 12. 10 p. m.)

Brigadier-General CULLUM,

Washington:

Major Gibson, commanding cavalry scout to Winchester, reports that he arrived there at 5 p. m. yesterday. The rear of the enemy's force left on Friday. Most of the troops went via Front Royal. Early's division went up the Valley, and was at Woodstock on the 25th.

B. F. KELLEY,

Brigadier-General.

HEADQUARTERS, CAVALRY CORPS,
July 28, 1863-7. 30 p. m.

Major-General HUMPHREYS,

Chief of Staff:

GENERAL: Inclosed please find a dispatch from General Custer, at Amissville, 1 p. m. His force will be small-not more than, 1, 200 men-until his dismounted men return from Washington.

Very respectfully,

A. PLEASONTON,

Major-General, Commanding.

[Inclosure.]

HEADQUARTERS THIRD DIVISION, CAVALRY CORPS,
Amissville, July 28, 1863-1 p. m.

Major-General PLEASONTON,

Commanding Cavalry Corps:

All is quiet along my front. A force of 3, 000 of the enemy's cavalry are reported at Little Washington. The pickets of the enemy are about 2 miles from Gaines' Cross-Roads. If that portion of my command now absent with unserviceable horses were here, I would like to make a demonstration in the vicinity of Little Washington, but in my present weakened condition I hardly deem it advisable. Last night my train arrived, and I am now well supplied. My horses have been several days without forage, but I hope our present supply will improve their condition. I caused my train to unload this remaining here long enough to allow Pinnington to go to Washington and get a new battery, excepting guns?

Very respectfully, &c.,

G. A. CUSTER,

Brigadier-General.

HEADQUARTERS ARMY OF THE POTOMAC,
July 28, 1863-8. 30 p. m.

Major-General PLEASONTON,

Commanding Cavalry Corps:

Your note containing dispatch from General Custer of 1. p. m. today is received. The major-general commanding directs that you re-enforce General Custer with one or two brigades, or whatever force you may consider necessary to hold the position now occupied by