When DU PLAT's Brigade moved down the slope, the 2nd and 3rd Light, and 2nd Line, Battalions of the Brunswickers, advanced a short distance over the crest of the ridge, in left rear of the former. Here they became exposed to a destructive fire of both artillery and musketry, the latter from the French Skirmishers that had crept from along the eastern hedge of Hougomont, close under the brow of that part of the Anglo-Allied position. They withstood this heavy fire, as also the subsequent charges of Cavalry, with great steadiness and courage; but as soon as the French horsemen were driven back by a portion of the Allied Cavalry (consisting of the 23rd British Light Dragoons, the 1st Light Dragoons of the King's German Legion, and the Brunswick Hussars and Lancers), the above mentioned Battalions withdrew from their exposed situation to the interior slope. The French Skirmishers, who had, during this last attack by their Cavalry, pushed forward a very considerable force through the Great Orchard of Hougomont, and along its eastern boundary, now concentrated a most galling fire upon the Squares of the Legionary Brigade, whose Commander, DU PLAT, was mortally wounded; several Officers fell, and all those that were mounted had their horses shot under them. The fire ceased; and in the next moment the _Cuirassiers_, having rallied, renewed their charge: but with no greater success than before; and a third charge proved equally ineffectual against the determined bravery and patient endurance of the soldiers of the Legion. About the time that DU PLAT's Brigade moved into the First Line, a considerable body of French _Cuirassiers_, which still remained in the hollow westward of La Haye Sainte, exposed to a fire from one or two of the Allied Batteries, advanced at a walk, to make another effort to break the Right Centre of WELLINGTON's Line. This proved as unsuccessful as the previous attacks. The Squares, reserving their fire until the close approach of the hostile Cavalry, and then directing it against the latter in the most cool and deliberate manner, which the absence of all impetus in an attack at a walk enabled them to do with unerring effect, soon compelled the shattered Squadrons once more to withdraw from a contest which the unexampled steadiness of the Allied Infantry had rendered almost hopeless on their part. The French Cavalry that attacked the Squares of DU PLAT's Brigade, immediately in rear of Hougomont, had no sooner been driven off by the gallant resistance of the Germans, than the Skirmishers, who, as before observed, had advanced in such numbers along the eastern inclosures of that Post, crept close up under the brow of that part of the ridge on the interior slope of which was posted the main body of the Brunswick Infantry.