Still the war in Lombardy proceeded with greater vehemence than ever; the Venetians constantly suffered fresh losses of territory, and the fleets they equipped upon the rivers were taken by the duke's forces; the country around Verona and Brescia was entirely occupied, and the two cities themselves so pressed, that their speedy fall was generally anticipated. The marquis of Mantua, who for many years had led the forces of their republic, quite unexpectedly resigned his command, and went over to the duke's service. Thus the course which pride prevented them from adopting at the commencement of the war, fear compelled them to take during its progress; for knowing there was no help for them but in the friendship of the Florentines and the count, they began to make overtures to obtain it, though with shame and apprehension; for they were afraid of receiving a reply similar to that which they had given the Florentines, when the latter applied for assistance in the enterprise against Lucca and the count's affairs. However, they found the Florentines more easily induced to render aid than they expected, or their conduct deserved; so much more were the former swayed by hatred of their ancient enemy, than by resentment of the ingratitude of their old and habitual friends. Having foreseen the necessity into which the Venetians must come, they had informed the count that their ruin must involve his own; that he was deceived if he thought the duke, while fortune, would esteem him more than if he were in adversity; that the duke was induced to promise him his daughter by the fear he entertained of him; that what necessity occasions to be promised, it also causes to be performed; and it was therefore desirable to keep the duke in that necessity, which could be done without supporting the power of the Venetians. Therefore he might perceive, that if the Venetians were compelled to abandon their inland territories, he would not only lose the advantages derivable from them, but also those to be obtained from such as feared them; and that if he considered well the powers of Italy, he would see that some were poor, and others hostile; that the Florentines alone were not, as he had often said, sufficient for his support; so that on every account it was best to keep the Venetians powerful by land. These arguments, conjoined with the hatred which the count had conceived against Filippo, by supposing himself duped with regard to the promised alliance, induced him to consent to a new treaty; but still he would not consent to cross the Po. The agreement was concluded in February, 1438; the Venetians agreeing to pay two-thirds of the expense of the war, the Florentines one-third, and each engaging to defend the states which the count possessed in La Marca. Nor were these the only forces of the league, for the lord of Faenza, the sons of Pandolfo Malatesti da Rimino and Pietro Giampagolo Orsini also joined them.