The Spanish commander did not hesitate, but instantly detached a considerable force under Sandoval for this object. On the march, his rear-guard, composed of Tlascalans, was roughly handled by some light troops of the Mexicans. But he took his revenge in a pitched battle which took place with the main body of the enemy at no great distance from Chalco. They were drawn up on a level ground, covered with green crops of maize and maguey. The field is traversed by the road which at this day leads from the last-mentioned city to Tezcuco.[327] Sandoval, charging the enemy at the head of his cavalry, threw them into disorder. But they quickly rallied, formed again, and renewed the battle with greater spirit than ever. In a second attempt he was more fortunate; and, breaking through their lines by a desperate onset, the brave cavalier succeeded, after a warm but ineffectual struggle on their part, in completely routing and driving them from the field. The conquering army continued its march to Chalco, which the Mexican garrison had already evacuated, and was received in triumph by the assembled citizens, who seemed eager to testify their gratitude for their deliverance from the Aztec yoke. After taking such measures as he could for the permanent security of the place, Sandoval returned to Tezcuco, accompanied by the two young lords of the city, sons of the late cacique. They were courteously received by Cortés; and they informed him that their father had died, full of years, a short time before. With his last breath he had expressed his regret that he should not have lived to see Malinche. He believed that the white men were the beings predicted by the oracles as one day to come from the East and take possession of the land;[328] and he enjoined it on his children, should the strangers return to the Valley, to render them their homage and allegiance. The young caciques expressed their readiness to do so; but, as this must bring on them the vengeance of the Aztecs, they implored the general to furnish a sufficient force for their protection.[329]