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Rh enth, and if heavy firing should at that time be heard in the direction of General Porter, to move at once to his assistance without further orders. At noon, on the twenty-sixth, the approach of the enemy, who had crossed above Meadow Bridge, was discovered by the advanced pickets at that point, and at half-past twelve in the afternoon they were attacked and driven in. All the pickets were now called in, and the regiment and battery at Mechanicsville were withdrawn. About three o'clock in the afternoon the enemy formed his line of battle, and came down upon our troops like a torrent—attacking the entire line. McClellan, anticipating a fierce onset, was prepared for such an event, and gave him a warm reception. Our artillery occupied positions commanding all the roads and open ground. Timber had been felled, rifle-pits dug, and the infantry were undercover of the thick woods. All remained quiet until the rebel mass came rushing on—yelling as they came—within a short distance of our line, when every battery and division opened simultaneously a most destructive fire, which drove the enemy back with tremendous slaughter. Several other attacks were made on our lines during the afternoon, which proved disastrous to the enemy. At nine o'clock in the evening the firing ceased, the action having lasted six hours.

During the night the heavy siege guns and wagons were removed to the right bank of the Chicka-