As Cromwell, with the life guards, cautiously descended the hill, keeping under cover of the hedges, three-quarters past midnight was struck by the cathedral clock—proclaiming that the hour was close at hand.
The outpost reached by Cromwell was guarded by two hundred and fifty foot and two hundred horse, but three hundred of the best troopers in his army being now added, he deemed this force quite sufficient to repel the attack.
Little time was left, but luckily those on guard at the outpost were on the alert. Having placed his troops with the quickness and skill peculiar to him, the Lord General stationed himself on a small woody mound in the centre of the field, whence he commanded the approach to the Sidbury-gate, and awaited the sortie with some impatience, but without the slightest anxiety. Close behind him were Dighton and a couple of cuirassiers.
He had not to wait long. While the single stroke of the cathedral bell yet vibrated through the air, and was echoed by the clocks of the other churches, the gate yawned wide, and a troop of sheeted spectres—for such they seemed in the gloom—issued forth. The ghostly band formed three regiments—the first being commanded by General Middleton, the second by Sir William Keith, the third by Colonel Legge.
The troops came forth from the Sidbury-gate and formed in silence. If any orders were given they did not reach Cromwell's ears, though he was listening intently; and the ghostly appearance of the horsemen was fully preserved until Middleton dashed off with the greatest rapidity, when the clatter of hoofs and the jingling of arms proved that the phantoms were substantial soldiers. The second regiment followed instantly, galloping along the London-road as swiftly as the first; but a momentary interval occurred before Colonel Legge started. The cause of this brief delay was perfectly intelligible to Cromwell, and he gave some orders to Dighton, who rode off at once to Colonel Lindsey.
Meanwhile, the two foremost regiments came on at full speed, and dashed past the field in which the outpost was stationed, making it evident that their point of attack was Lilburn's camp on the brow of the hill, and showing that the outpost would be dealt with by the regiment that followed.
In obedience to Cromwell's orders not a shot had been fired, and Colonel Legge came on uncertain as to how he would be received by the enemy. Easy access to the field could be obtained at several points known to the Royalists, and small parties of men entered at these places, but the main body, led by Colonel Legge, broke through the hedge skirting the London-road, and were received by ranks of pikemen three deep, the front rank kneeling, the centre stooping, and the rear standing upright, and forming an almost impassable barrier. On the flanks, right and left, were posted musketeers, who poured a terrible volley upon the enemy as they gained the field.
Several saddles were emptied. Nevertheless, Colonel Legge, shouting to his men to follow, charged the pikemen with the greatest intrepidity, but it was impossible to cut through their ranks. Many horses were killed in the charge, and others so desperately hurt that they bore back their riders in spite of all efforts to force them on. Colonel Legge's charger, though badly hurt, had still strength enough left to sustain its rider, but would not again face the deadly pikes.
Caught as in a trap, it seemed as if the unfortunate Royalists must all be slaughtered, but turning from the pikemen, Colonel Legge charged the musketeers with a fury that proved irresistible. Having gained the open field with such of his men as had been able to follow him, he was joined by the others, who having entered at different points had hitherto taken no part in the conflict. But before they could form they were charged by Colonel Lindsey, at the head of the life guards, and so shattered, that they could not recover, but fled from the field in the greatest disorder, hurrying towards the Sidbury-gate faster than they had quitted it. Many were shot while jumping the hedges, or pressing through the gates. Colonel Legge was the last to retreat. His horse carried him out of reach of the foe, and then dropped.
Cromwell watched the conflict from the mound on which he had taken his stand, and did not quit his position during the short time occupied by the conflict.