MARTINSBURG, June 23, 1864.

(Received 12.30 p.m.)

Major-General HALLECK:

I have the honor to report that the ammunition will arrive to-day. Everything promises to be ready by to-morrow noon. All detachments, including Twenty-third Illinois Infantry, will be here to-night. I would most respectfully request that any dispatches for General Hunter or instructions for myself be sent before 12 m. to-morrow.

Very respectfully,

JUL. STAHEL,

Major-General.

WASHINGTON, June 23, 1864-9 p.m.

Major-General STAHEL,

Martinsburg, W. Va.:

I have no orders to give you, except to carry out General Hunter's instructions to the best of your ability. The last news of him, through the Richmond papers, was that he had attacked Lynchburg and been repulsed with considerable loss. Nothing is said in regard to his line of retreat. All your movements must be made with great caution.

H. W. HALLECK,

Major-General and Chief of Staff.

MARTINSBURG, June 23, 1864.

Brigadier-General WEBER:

The commanding general directs that the detachment of 200 men sent to you from here be ordered to march to Martinsburg at 3 a.m. to-morrow. Acknowledge receipt.

T. A. MEYSENBURG,

Assistant Adjutant-General.

HARPER'S FERRY, June 23, 1864.

Major MEYSENBURG,

Assistant Adjutant-General.

I will send the detachment of 200 men as directed.

MAX. WEBER

Brigadier-General.

HARPER'S FERRY, June 23, 1864.

Major-General SIGEL:

A lady who came from Berryville this morning reports that the rebel Mosby, with about fifty men, was lying in that vicinity with the intention of attacking the railroad or some of our wagon trains. It is also rumored that a large rebel force, under the command of General Ewell was crossing the river at Front Royal. Since Saturday