relieved by Captain Martin's company of the Fourth Pennsylvania Cavalry, will, in compliance with paragraph 2 of Special Orders, Numbers 215, headquarters Army of the Potomac, proceed to join the First Cavalry Division, at Harper's Ferry.

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By command of Major-General Warren:

FRED. T. LOCKE,

Assistant Adjutant-General.

HEADQUARTERS NINTH ARMY CORPS,
August 12, 1864 - 9 a. m.

General WILLIAMS,

Assistant Adjutant-General:

Nothing unusual occurred on my front during last night. Early this morning the enemy opened with some heavy guns, supposed to be 20-pounders, from their new battery on the right of the Fifth Corps, and fired a few times at Roemer's battery.

A. E. BURNSIDE,

Major-General.

HEADQUARTERS NINTH CORPS,
August 12, 1864

General WILLIAMS:

I have the honor to report the usual state of affairs on my line during the day. The enemy used a good deal of artillery about night-fall, apparently only for purposes of annoyance.

A. E. BURNSIDE,

Major-General.

HEADQUARTERS SECOND DIVISION, NINTH ARMY CORPS,
Before Petersburg, Va., August 12, 1864.

Lieutenant Colonel LEWIS RICHMOND,

Assistant Adjutant-General, Ninth Army Corps:

COLONEL: I have the honor to report that the firing on my front, both musketry and artillery, was more than usually heavy during the night. Nothing of importance occurred, however, and the occasion of this increased fire is not apparent.

I am, colonel, very respectfully, your obedient servant,

ROBERT B. POTTER,

Brigadier-General, Commanding.

HEADQUARTERS THIRD DIVISION, NINTH ARMY CORPS,
Before Petersburg, Va., August 12, 1864.

Lieutenant Colonel LEWIS RICHMOND,

Assistant Adjutant-General, Ninth Army Corps:

SIR: I have the honor to report no changes on my front the last twelve hours. The picket and artillery fire has been much heavier than usual. The enemy opened with heavy guns, supposed to be