HDQRS. EIGHTH ARMY CORPS, Baltimore, July 5, 1863. (Received July 6, 12. 10 a. m.)

Major-General HALLECK,
General-in-Chief, Washington, D. C.:

To get my troops to Frederick quickly and fresh to-morrow, I will send them by railroad. Will send you report when I have started them. I think I can send over 3, 000 pretty good men.

ROBT. C. SCHENCK,

Major-General, Commanding.

SPECIAL ORDERS,
HEADQUARTERS EIGHTH ARMY CORPS,

Numbers 180.
Baltimore, Md., July 5, 1863.

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IV. Brigadier-General Briggs, U. S. Volunteers, will immediately proceed with the following-named troops by railroad to Frederick City, Md.: The Ninth Maryland Volunteer Infantry; the Tenth Maryland Volunteer Infantry; the Eighth Regiment Massachusetts Volunteer Infantry; the Forty-sixth Regiment Massachusetts Volunteer Infantry; the Fifty-first Regiment Massachusetts Volunteer Infantry; the Seventh Regiment New York State Militia: detachment of the [First] Connecticut Cavalry; Battery B, First Maryland Volunteer Artillery; Battery C, First Pennsylvania Volunteer Artillery.

The command will go in light marching order. They will cary with them their blankets, canteens, and haversacks; 40 rounds of ammunition in their cartridge-boxes, and 20 rounds in their pockets. On his arrival at Frederick, he will report to Major-General French.

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VI. Captain Charles Farnsworth, commanding First Connecticut Cavalry, will collect together all the available men of his command, and march without delay to Frederick City, Md. On his arrival there, he will report to Brigadier-General Briggs, U. S. Volunteers.

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By command of Major-General Schenck:

WM. H. CHESEBROUGH,

Assistant Adjutant-General.

HEADQUARTERS ARMY OF THE POTOMAC, July 5, 1863.

General BENHAM,
Navy-Yard, Washington:

Put your bridge trains and troops in motion at once for Harper's Ferry. Will telegraph further orders from Frederick to-morrow p. m. to Poolesville and Rockville for you. Answer.

DANL. BUTTERFIELD,

Major-General.

LOUDON, July 5, 1863.

General COUCH:

Colonel Pierce pushed the whole of his forces in the direction of Mercersburg. We have an office within 3 miles of Chambersburg.

OPERATOR.