 By 16 July, the two Texas schooners made prizes of the "Union", the "Telégrafo", and the "Adventure" off Sisal and on 26 July they engaged the batteries defending Campeche's harbor.Describing the attack on that city, Tom Wells writes, "Continuing up the Yucatan coast, the expedition boarded ships and landed shore parties until finally they were attacked by a cavalry force and driven back to their ships.The Texans burned two villages in reprisal, then tried to force Campeche to pay $25,000 in tribute.