After that, this being no more than the preliminary of the task before him, Theodore marched out every man of his following to go against Bellarion at Casale. Thus, by that ancient plan of attacking a vital point that had been left undefended, had Bellarion succeeded in drawing his enemy from a point of less importance in which he was almost impregnably entrenched. Theodore had perceived, as Bellarion had calculated that he would, that it could serve little purpose for him to hold an outpost like Vercelli if in the meantime the whole of his dominions were to be wrenched from his grasp. No sooner was he gone, however, than Carmagnola, informed of his departure, rallied his broken troops, and with drums beating, trumpets blaring, and flags flying, marched like a conqueror into the now undefended city of Vercelli. For the resistance it had made, he subjected it to a cruel sack, giving his men unbounded licence, and that same evening he wrote to Duke Filippo Maria in the following terms: MOST POTENT DUKE AND MY GOOD LORD,--It is my joyous task to give your highness tidings that, informed of the reduction in our numbers resulting from the defection of the Prince of Valsassina and several other captains acting in concert with him, the Lord Theodore of Montferrat, greatly presumptuous, did to-day issue from Vercelli for wager of battle against us. A vigorous action was fought in the neighbourhood of Quinto, in which despite our inferior numbers we put the Marquis to flight. Lacking numbers sufficient to engage in pursuit, particularly as this would have led us into Montferrine territory, and since the reoccupation of Vercelli and its restoration to your duchy was the task with which your highness entrusted us, I marched into the city at once, and I now hold it in the name of your exalted potency. By this complete and speedy victory I hope to merit the approbation of your highness. Meanwhile Theodore's march on Casale had anything but the aspect of a flight. The great siege train he dragged along with him over the sodden and too-yielding ground of that moist plain delayed his progress to such an extent that it was not until late on that November afternoon when he reached Villanova, here to receive news from his scouts that a considerable army, said to be commanded by the Prince of Valsassina, was circling northward from Terranova. The news was unexpected and brought with it some alarm. He had gone confidently and rather carelessly forward fully expecting to find the enemy shut up in Casale. Hence all the ponderous siege train which had so hampered his progress. That Bellarion, forsaking the advantage of Casale's stout walls, should come out to meet him and engage him in the open was something beyond his dreams, and but for the unexpectedness of it, he would have rejoiced in such a decision on the part of his redoubtable opponent.