An extraordinary stir and commotion was noticed, about 2 P.M. in the enemy's camp, after both armies had dined. From the opposite lines, numerous light troops were seen advancing in the direction of our piquets, which had been previously reinforced, and this movement was followed by a general attack upon the entire chain of outposts. Our soldiers, deploying into line, occupied their allotted station.--Being the junior corps, the 50th was in the centre of the brigade, flanked by the King's Own, and 42nd Highlanders; in company with such men, the Black Cuffs could not fail, and they were proud, and justly too, of being enrolled with those fine regiments. Sir John Moore was quickly on the spot, and with the experienced mind of an old and skilful warrior, he gave the necessary orders to the several officers of his army holding command. The staff were then dispersed, and flying in all directions with those orders to the various divisions, the whole of which in a very short space of time were standing to their arms. It was about 3 o'clock when the light troops advanced in multitudes against our line; rapidly descending the hill they opened a brisk discharge from their rifles upon our piquets, that lined the enclosures throughout the wide extent of the ravine. It was very polite of the Frenchmen to allow us time to get our dinners, although it will appear that they had not finished their own repast; however, to make up for this mistake, we helped them to a desert of forced meat balls, which, composed as they were of indigestible materials, formed a considerable portion of this day's bill of fare.--As soon as matters began to wear a serious aspect, the locks and flints were examined, caps tied on, and other preparatory measures taken for the deadly strife. For the purpose of covering his forward movements, a heavy cannonade was poured down by the enemy from a masked battery on the elevated ridge. By this plunging fire our ranks were much thinned, and the round shot, booming on every side, scattered about the splinters, sand, and stones, that fell in showers upon our heads.--Pending the operations, a general assault was made upon our left, from whence the music of artillery sounded loud and incessant. Perceiving, by the strong fire, that a French corps was pushing through the hollows, evidently with the view of turning our right flank, Colonel Wynch, of the 4th, threw back some companies of that regiment, forming an obtuse angle with the line; which effectually prevented the enemy from making any further efforts in that quarter. While this was going on, a regiment of Guards was brought up in reserve, and posted at the rear of our brigade.