In the course of the 15th and 16th Marmont, who had previously made deceptive movements, concentrated his beautiful and gallant army on its right towards Toro, which place, intercepted letters, reports of deserters and the talk of the peasants, had for several days assigned as his point of passage. On the morning of the 16th English exploring officers, passing the Duero near Tordesillas, found only the garrison there, and in the evening the reports stated, that two French divisions had already crossed by the bridge of Toro; wherefore Wellington united his centre and left at Canizal, on the Guarena, during the night, intending to attack; but as he had still some doubts of the real object, he left Sir Stapleton Cotton on the Trabancos with the right wing, composed of the fourth and light divisions and Anson’s cavalry. Suddenly Marmont recalled his troops, returned to Tordesillas and Pollos, passed the Duero and concentrated at Nava del Rey in the evening of the 17th, some of his men having marched forty, some fifty miles without a halt. Wellington was then near Toro, and Cotton remained behind the Trabancos during the night without orders, in a bad position; Wellington however hastened to his aid, bringing up Bock’s, Le Marchant’s, and Alten’s cavalry, while the fifth division took post six miles in rear of the Trabancos. COMBATS OF CASTREJON AND THE GUARENA. (July, 1812.) At daybreak Cotton’s outposts were driven in, yet the bulk of his cavalry and a troop of horse artillery showed a front, having the two infantry divisions in support; the fourth behind his left, the light division behind his right, but widely separated by a valley. The country was open, like the downs of England, with here and there water-gullies, dry hollows and naked heads of land, behind one of which, on the other side of the Trabancos, lay the French army. Cotton, seeing only horsemen, pushed his cavalry towards the river, advancing cautiously by his right along some high table-land, where his troops were lost at first in the morning fog, then thick on the stream. Very soon the deep tones of artillery shook the ground, the sharp ring of musketry was heard in the mist, and the 43rd Regiment was hastily brought through the village of Castrejon to support the advancing cavalry; for besides the deep valley separating the fourth from the light division, there was a ravine with a marshy bottom between the cavalry and infantry, and the village furnished the only good passage.