The vast preponderance of force on the part of the French, was now quite manifest to the Prince of ORANGE, who found himself compelled to withdraw the main body of his troops into the Wood of Bossu, still retaining, however, the Post of Gemioncourt. He gave an Order to Captain STIEVENAAR's Foot Battery to fall back and take up a flanking position near the Wood. Here this Officer, who possessed the highest merit, lost not a moment in reopening his fire, but scarcely had he done so when he was mortally wounded. At the same moment one gun was damaged so as to become useless. The Enemy rapidly advanced in such superior force as to compel the Battery to resume its retreat. Captain BYLEVELD's Horse Battery retired by the opposite side of Gemioncourt. One of its limbers blew up, severely wounding an Officer, and occasioning the gun attached to it to be relinquished. The French pressed forward with their Light Troops; and part of PIRÉ's Light Cavalry, seizing a favourable opportunity, gallantly charged the 27th Dutch Light Infantry, threw it into confusion, and made many prisoners. At this time a portion of BACHELU's Infantry Division on the right advanced towards the village of Piermont. * * * * * It was about half past two, or perhaps a quarter before three o'clock, when the Prince of ORANGE, whose situation had become extremely critical, as he directed his anxious looks towards that point of the horizon which was bounded by the elevated ground about Quatre Bras, had the inexpressible satisfaction of recognising, by their deep red masses, the arrival of British troops upon the field. These comprised the Fifth Infantry Division, commanded by Lieutenant General Sir THOMAS PICTON, and consisting of the Eighth British Brigade, under Major General Sir JAMES KEMPT, the Ninth British Brigade, under Major General Sir DENIS PACK, and of the Fourth Hanoverian Brigade, under Colonel BEST. The head of the Column, leaving Quatre Bras on its right, turned down the Namur road, along which the Division was speedily drawn up; the British Brigades in Front, and the Hanoverian Brigade in Second Line. Captain RETTBERG's Battery of Hanoverian Foot Artillery took post on the right, and Major ROGERS's Battery of British Foot Artillery on the left, of the Division. The 1st Battalion of the 95th British Regiment, commanded by Colonel Sir ANDREW BARNARD, was despatched in haste towards the Village of Piermont, of which it was to endeavour to gain possession. [Illustration]