He slept long that night, notwithstanding the hazard which lay upon the cast of battle; and when at length he woke, the host of the invaders was already marshalled along the bank of the River Salto, which formed their front. Charles scanned their line, and his heart sank, so great was their multitude. In something like despair he turned for counsel to a famous warrior who had but just landed from Palestine, where he had won world-wide renown, Alard de St. Valery. The wary Frenchman did not question that the chances of the coming fight were against Anjou. "If you conquer," he said, "it must be by cunning rather than by strength." Charles allowed him to make those dispositions which he pleased; and thereupon St. Valery placed a strong force of lances, with the King himself at their head, in a hollow of the hills, where they could not be seen. Then he hurled against Conradin two successive attacks, both of which were repulsed with heavy loss. Charles wept with rage to see his knights so broken, and strove to break out to rescue them, but St. Valery held him back, and Conradin, seeing no more enemies, thought the battle won. His men unhelmed themselves. Some went to bathe in the cool river. Others, after the fashion of the day, plundered the fallen knights. One large body under Henry of Castile had pursued the fleeing French far over plain and mountain. All this St. Valery lay watching in dead silence from his hiding in the hollow of the hills. At last the moment came, and the serried ranks of the fresh warriors rode down upon their unarmed and unsuspecting enemies. No time was given to arm or form up the troops. Some perished in the water. Others died struggling bravely against the shock of that horrible surprise. The trap was perfect. All either died or fled; and in one brief hour Conradin, who had thought himself the conqueror of his father's throne, was fleeing for his life across the hills, a fugitive devoid of hope. Never, surely, was there so sudden or terrible a change of fortune.