On this occasion, Marcello, who was fighting under the guns of the batteries of the forts, was wounded in the arm by a shrapnel; nevertheless, he remained in command of his own contingent until victory, earning the praise of the Senate.

Marcello was one of the most ardent supporters of a strategy of this type, but he did not find a strong following: in addition to the scarcity of resources, there was the problem of the lack of coordination between the commanders, to which was added the excessive prudence of the captain general Giovanni Cappello.

The Venetian government, now closer to his ideas, turned to him to revive the troops (demoralized by the terrible sinking of one hundred and five ships, which had just occurred) and on 9 May 1648 he was appointed "extraordinary administrator in the army" (Provveditore estraordinario in armata).

[1] In the following period, Marcello was the advocate of numerous offensive enterprises (although none had decisive results) and repeatedly asked to remedy the shortcomings and limitations of the Venetian fleet.

[1] At the beginning of March 1656, Marcello sailed from Candia with an ambitious plan: to destroy the enemy fleet as soon as it had passed the Dardanelles and then retreat to Chania to free it.

The commander placed himself at the center of the fighting without sparing himself: he was hit by a cannon as he was about to board an enemy ship and died in the arms of his lieutenant Giovanni Marcello, who covered his body so as not to demoralize the crews.

[1][6][5] It was Lazzaro Mocenigo who brought news of the victory to his homeland, together with the body of Marcello who, after the state funeral, was buried in the family tomb in San Vidal.

[1] His inheritance, as reported in his testament of 1652, was enjoyed by some religious and welfare institutions, his serfs and relatives, while the bulk of his patrimony (about 75,000 ducats) went to his great-grandchildren, sons of the favorite nephew Andrea.