BALTIMORE, MD., September 12, 1862.

Major-General BANKS:

The rebels left Westminster to-day noon; some of their pickets not till 3 p. m. Gone toward Uniontown and Smithsburg. They were about 400 strong, and two pieces cannon. Said they would be back in stronger force in few days.

J. L. McPHAIL.

WHEELING, VA., September 12, 1862.

General HALLECK:

I would respectfully suggest that Colonel Crook, who was in General Cox's division, be sent to assist Colonel Lightburn in the command in that section, and that two regiments of Ohio volunteers, who are near the mouth of the Kanawha, be sent to Lightburn immediately.

F. H. PEIRPOINT.

WASHINGTON, September 12, 1862.

JOHN TUCKER, JR., Philadelphia:

What is the news in Philadelphia to-day?

JOHN TUCKER.

PHILADELPHIA, PA.,

September 12, 1862. (Received 3.30 p. m.)

Honorable JOHN TUCKER,

Assistant Secretary of War:

Dispatch received. Curtin has called 50,000 men to defend the State 20,000 from Philadelphia Home Guards. Expect to go to Harrisburg to-night. There are rumors of placing the city under martial law and suspending business. Shall I go?

JOHN TUCKER, JR.

GENERAL ORDERS, WAR DEPARTMENT, ADJT. General 'S OFFICE,

No. 129. Washington, September 12, 1862.

I. The President directs that the First, Second, and Third Corps of the Army of Virginia, announced in General Orders, Numbers 103, be here after designated the First, Eleventh, and Twelfth. The several army corps will now stand as follows:

The First, Second, Third, and Fourth as arranged in General Orders, Numbers 151, of March 13, 1862, from the Headquarters Army of the Potomac.*

The Fifth, Sixth, Seventh, Eighth, and Ninth as announced in General Orders, Numbers 84, of July 22, 1862, from this office.+

The Tenth as announced in General Orders, Numbers 123, of September 3, 1862, from this office.

The Eleventh and Twelfth the same as the First and Second Corps, Army of Virginia.

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* * * * * * * *

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By order of the Secretary of War:

L. THOMAS,

Adjutant-General.

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*See Series I, Vol. V, p. 18.

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+See Series I, Vol. XI, Part III, p. 333.