 Charles, attempting to gain Clement's favor, ordered his armies to seize Florence and return the Medici to power.The Republic resisted this incursion; but, left without allies and betrayed by many of the mercenaries in her employ, Florence was unable to keep fighting indefinitely.After the capture of Volterra by the Imperial forces and the death of Francesco Ferruccio at the Battle of Gavinana, further resistance became impractical, and the city surrendered in August 1530.