The Duke, considering that a reinforcement of Artillery was particularly required in front of COOKE's Division and the Brunswick Infantry against which the Enemy was evidently preparing fresh attacks, ordered up Lieutenant Colonel DICKSON's British Horse Battery, commanded by Major MERCER, and Major SYMPHER's Horse Battery of the King's German Legion, into the Front Line: the former, to the left of Lieutenant Colonel SMITH's Horse Battery, in front of the Brunswickers; and the latter further to the left. Major MERCER's Battery had barely time to get into action, when a heavy Column of Cavalry, composed of Horse Grenadiers and _Cuirassiers_, was seen ascending the ridge, and advancing at a rapid rate directly towards the spot upon which it had taken post. The guns, which were nine pounders, were each loaded with a round and a case shot; and were run close up to a bank of two or three feet in height, which descended from the narrow cross road along the ridge, and which thus formed a sort of _genouillère_ to the Battery. In front, the summit of the ridge consisted of a flat surface, of forty or fifty yards in width, whence the ground descended rapidly towards the plain that divided the two Armies. The Column continued to advance until it came quite close upon these guns, the muzzles of which were nearly on a level with the cross road; when it suddenly recoiled from the very destructive fire with which it was received. The horsemen of the leading Squadrons faced about, and endeavoured to force their way to the rear; confusion ensued, and the whole mass broke into a disorderly crowd. Several minutes elapsed ere they succeeded in quitting the summit of the ridge, during which the fire from the Battery was incessant; and, from the shortness of the distance, the size of the objects, and the elevation of the ground on which they stood, the consequent carnage was truly frightful. Many, instead of seeking safety in retreat, dashed through the intervals between the guns, and surrendered: but the greater part, rendered desperate at finding themselves held, as it were, in front of the Battery, actually fought their way through their own ranks; and, in the struggle, blows were exchanged on all sides. At length, the wreck of this formidable Column gained shelter under the slope of the ridge, leaving the summit encumbered with its killed and wounded.