HEADQUARTERS ARMY OF THE POTOMAC, June 24, 1863.

Brigadier-General ABERCROMBIE, Centrenville:

The commanding general directs that you report with that brigade of your division that has been longest in the service, to Major-General Hancock at Thoroughfare Gap; that your order, of the remaining brigades, one to report to General Slocum, at Leesburg, and one to report to General Slocum, at Leesburg, and one to report General Reynolds, at Herndon Statio, on the Loudoun and Hampshire Railroad. These movements to be executed with as little delay as practicable. You will be relieved at Centrenville by a division of the Sixth Corps. Please acknowledge receipt.

S. F. BARSTOW,
Assistant Adjutant-General.

POOLOSVILLE, June 24, 1863.

(Received 11 a. m.)

Colonel ALBERT J. MYER,

Chief Signal Officer:

Large trains are crossing at Sharpsburg. Artillery and wagon trains are passing through Charlotte [Charleston] toward Shepherdstown. DANIELS, Captain, Maryland Heights.

LEESBURG, June 24, 1863-1. 10 p. m.

General HOOKER:

I do not know where Charlotte is; I think it must mean Charleston. I have ordered the signal officer to get the dispatch repeated carefully, and will inform you of the result.

H. W. SLOCUM,

June 24, 1863.

General JOSEPH HOOKER:

The signal officer at Maryland Heights corrects his dispatch to read Charleston instead od Charlotte. He says 5 rebel cavalrymen were captured, and report General Lee's headquarters at Berryville.

H. W. SLOCUM,

Major-General.

HEADQUARTERS SECOND CORPS, June 24, 1863.

Major-General STAHEL, Commanding Cavalry Division:

GENERAL: Can you, without interfering with your arrangements, leave 200 or 300 cavalry with General French at Gainesville, to watch the roads toward Warrenton and Greenwich?

WINF'D S. HANCOCK,
Major-General.