SPECIAL ORDERS, HDQRS. MIDDLE DEPT.,8TH ARMY CORPS, No. 204. Baltimore, August 15, 1864.

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6. In obedience to orders of the general commanding Middle Military Division the detachments of the Eighth Regiment Illinois Cavalry, on duty with the First Separate Brigade, will be concentrated without delay at Muddy Branch, in the Department of Washington, and report to Major-General Augur. Brigadier General E. B. Tyler is charged with the execution of this order.

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9. Brigadier General H. H. Lockwood, commanding Third Separate Brigade, is hereby directed to take immediate steps to mount one company of militia [100-days' service] for duty in this department as mounted infantry. General Lockwood will make requisitions for horses and horse equipments, and forward the same to these headquarters for approval without delay.

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By command of Major-General Wallace:

SAML. B. LAWRENCE,
Assistant Adjutant-General.

WAR DEPARTMENT, Washington, D. C., August 15, 1864-3.25 p.m.

Major-General COUCH,

Harrisburg:

There is no reason why General Cadwalader should not be ordered back to Philadelphia if you deem proper to do so.

H. W. HALLECK,

Major-General and Chief of Staff.

HEADQUARTERS DEPARTMENT OF THE SUSQUEHANNA, Harrisburg, Pa., August 15, 1864.

LieutenantColonel JAMES W. FORSYTH,
Chief of Staff, Middle Military Div., Harper's Ferry, W. Va.:

COLONEL: I have the honor to acknowledge receipt of paragraph 10, Special Orders, No. 3, dated headquarters Middle Military Division, Harper's Ferry, August 9, 1864, and in obedience to the same, I herewith transmit a field return of my command, with a roster of the regiments and detachments. The positions occupied and by what troops are as follows:

Brandywine District.-Chambersburg, Pa., one section of artillery from Battery A, First New York Artillery; independent company, Patapsco Guards, Maryland Volunteers; four companies First Battalion [100-days'] Pennsylvania Volunteers. Occupying mountain passes between McConnellsburg and Loudon, one company First Battalion between McConnellsburg and Loudon, one company First Battalion [100-days'] Pennsylvania Volunteers. Occupying mountain passes between McConnellsburg and Mercersburg, one company First Battalion [100-days'] Pennsylvania Volunteers. Between Gettysburg and Green Mountain, one company First Battalion [100-days'] Pennsylvania Volunteers. Hagerstown, Md., one company mounted [100-days'] Pennsylvania Volunteers.