The rear of the column at last presented itself, an officer on horseback bringing it up. Then an order to fire was given, and Lieutenant Benjamin, a brave young fellow from West Point, fired the first shot from a twenty-pound rifled gun.
A cloud of dust, with a horse rearing, and its rider struggling in the midst, was all the result that could be observed. The rear of the enemy’s column then took the double-quick down the valley, and six pieces of artillery opened on them. The effect was terrible; at the distance of only four hundred yards, the enemy took the raking downward fire in all its fury. An awful cry rang up from the valley; the men had been swept down like wheat before a scythe, and their moans filled the air.
This murderous fire was repeated over and over again. There was no waiting to swab the guns, but, fast as powder and ball could be served, the ordnance sent out its volleys. The enemy made a desperate stand, but every shot swept down the men in masses. A vacant space appeared for a moment, then fresh men filed in. Twice they attempted to reform and charge the battery, but the rapidity with which the pieces were served, and the peculiar nature of the ground, rendered every shot effective, and they were swept back, cut down, speedily disorganized, and fled for the woods.
During all this action, Lieutenant-Colonel Marsh, of the Sixteenth, and Colonel Pratt, of the Thirty-first (the former since killed, and the latter wounded before Richmond), controlled their men perfectly. Not an infantry shot was fired during the engagement. Balls from the enemy struck the ground in volleys before the men, filling their eyes with dust. No man gave way; they were compelled to change position three times during the fight. Although so many of the enemy were killed, this spot being named, in the secession reports, as giving the heaviest mortality of the day, only two men of Davies’ command were hurt. One man was wounded, and Lieutenant Craig, a brave young officer from West Point, was killed.
This brilliant engagement, so important in its results, sprang out of a singular series of accidents: first, in the mistake made in reading Richardson’s dispatch, and again in a failure of orders. When the main army began its retreat past Centreville, at four o’clock, Colonel Miles sent his aid, Captain Vincent, to order Davies and his command back to Centreville, but Vincent, instead of coming first to Davies, stopped to give orders to Richardson, and two regiments of Davies’ brigade, stationed to guard his rear. After ordering Richardson back, Vincent came over the ravine to deliver his orders to Davies, when he heard his firing on the extreme left, went back to Centreville, to report, and returned just as the firing ceased, to direct Colonel Davies to retire on Centreville.
Davies, ignorant that Richardson had already fallen back, rode over to order his retreat, but to his astonishment, almost horror, found that the whole brigade, with two regiments of his own forces left to guard his rear, had been gone a full hour. Thus it happened that this important engagement had been fought and won with a single battery and two regiments of infantry, utterly alone and unsupported on the deserted battle-field, against a large body of men, endeavoring to sweep to the rear and cut off the army in its retreat.
It was near six o’clock when this contest terminated—two hours after the main army were in full retreat. If ever delay and accident were providential on this earth, it was here; for brave as these men were, no sane leader would have felt justified in exposing them to such peril upon a deserted battle-field, and in the face of a whole victorious army, after all chance of protection had been withdrawn.
When this band of victorious men reached Centreville, a stream of jaded, wounded and heavy-hearted men were pouring through the village, while General McDowell was making a desperate effort to collect all the troops that still kept a show of organization, under his own command. These troops were principally composed of the left wing, which came off the ground in good order. McDowell, about eight o’clock, left Centreville for Fairfax Court House. Before going Colonel Miles was relieved from his command of the left wing, and the following order, written on the back of a visiting card, was handed to Colonel Davies:
Colonel Davies is consigned to the command of the left wing, as the troops are now formed. By command,
J. B. Fry, a. a. g.