SPECIAL ORDERS,
HDQRS. ARMY OF THE POTOMAC, Numbers 51.
Washington, September 12, 1861.

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3. Brigadier-General Lander with his brigade-composed of the Nineteenth and Twentieth Regiments of Massachusetts Volunteers, the Seventh Regiment of Michigan Volunteers, the company of Massachusetts sharpshooters, and a battery of volunter light artillery-will march at the earliest practicable moment to the camp of the Corps of Observation at Poolesville and report to General Stone for duty. The various staff departments will comply promptly with General Lander's requisitions for supplies and means of transportation.

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By command of Major-General McClellan:

S. WILLIAMS,
Assistant Adjutant-General.

[5.]

HEADQUARTERS KANAWHA BRIGADE,
Gauley Bridge, September 12, 1861.

General W. S. ROSECRANS,

Cross-Lanes:

SIR: Two of your dragoons reached our outposts this morning about daybreak, and have just reported to me that they, with others, were fired upon by a party of my men who were encamping about fifteen miles from here. No one was hurt, and the whole might have come through. The sergeant with the dispatches went back, and from the two now here I can glean but little, except that you have driven the enemy over the river. I had ordered a party of one company of infantry and thirty cavalry forward from the advance post yesterday to push through to you if possible, but the cavalry mistook their order and staid behind. Otherwise you would have had messengers from me yesterday. No distinct firing has been heard by us or our advance parties. Since being deceived in so clear a day as Sunday was, they have not been so quick to hear it. I am preparing to-day to push forward at Wise, and if I see a fair chance I will either get between him and Floyd or drive him beyond the Sunday road. I would give my left hand for another good regiment to-day.

In haste, very respectfully, yours,

J. D. COX,

Brigadier-General, Commanding.

[5.]

SPECIAL ORDERS,
HDQRS. ARMY OF THE POTOMAC, Numbers 53.
Washington, September 13, 1861.

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10. The following-named regiments will constitute a brigade, to be commanded by Brigadier General J. J. Peck, volunteer service: Sixth New Jersey Volunteers, Thirteenth Pennsylvania Volunteers, Anderson Zouaves, Fifty-fifth New York Volunteers. The brigade will be encamped for the present near Meridian Hill, in such position as may be indicated from these headquarters.

By command of Major-General McClellan:

S. WILLIAMS,
Assistant Adjutant-General.

[5.]