SPECIAL ORDERS,
WAR DEPT., ADJT. GENERAL'S OFFICE, Numbers 145. Washington, June 26, 1862.

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5. Brigadier-General Cook, U. S. Volunteers, is assigned to duty in the arms corps under Brigadier General Samuel D. Sturgis, to whom he will report in person.

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By order of the Secretary of War:

L. THOMAS,
Adjutant-General.

[12.]

HEADQUARTERS FOURTH CORPS,
June 26, 1862.

Brigadier-General PECK,

Commanding Division:

GENERAL: I am instructed by the general commanding the corps to state information has been received from headquarters Army of the Potomac to the effect that Jackson is advancing on the right flank of this army toward the White House. The general desires you to direct your pickets to be most vigilant, and report everything of importance that occurs; also that you will have every man's cartidge-box filled with cartridges, your caissons filled, and your command prepared for action, but let them rest and keep fresh. The general is instructed to direct you to guard Bottom's Bridge well and keep a sharp lookout toward White Oak Swamp. A preliminary notice to be vigilant has been sent to General Naglee, to save time.

Very respectfully, your obedient servant,

C. C. SUYDAM,

Captain and Assistant Adjutant-General.

[11.]

CIRCULAR,] HEADQUARTERS FOURTH CORPS,

June 26, 1862.

Information has been received from headquarters Army of the Potomac that McCall and two brigades of Morell's have been hotly engaged large force, but were badly beaten. Let all the troops throughout the corps be informed of this cheering news.

By order of Brigadier-General Keyes:

C. C. SUYDAM,

Captain and Assistant Adjutant-General.

[11.]

HEADQUARTERS ARMY OF THE POTOMAC,
June 26, 1862.

General F. J. PORTER:

The commanding general desires that you will use all the means in your power to ascertain at the earliest possible moment the strength of the columns of the enemy moving down upon you.

S. WILLIAMS,

Assistant Adjutant-General.

[11.]