 Upon d'Aragona's return, Osuna ordered him to prepare a campaign to face the Ottoman fleet in its own waters.The Viceroy had been warned of the departure of a large fleet from Constantinople, and although his informers did not notice the preparation of any attack against the island, he preferred to make sure of it.D'Aragona's galleys were reinforced, each one with 100 muskets, 50 spontoons, 20 bucklers and 150 chuzos in case it was necessary to arm the rowers to help the galley's soldiers to fight the Ottomans.