Cardona marched to relieve the city in early April 1512, and was decisively beaten in the resulting Battle of Ravenna, fought on Easter Sunday; the death of Foix during the fighting, however, left the French under the command of Jacques de la Palice, who, unwilling to continue the campaign without direct orders from Louis, contented himself with thoroughly sacking Ravenna. By May 1512, the French position had deteriorated considerably. Julius had hired another army of Swiss mercenaries; they descended on Milan, bringing with them Maximilian Sforza, who was determined to regain control of the Duchy for his family. The French garrisons abandoned the Romagna (where the Duke of Urbino quickly captured Bologna and Parma) and retreated to Lombardy, attempting to intercept the invasion. By August, the Swiss had combined with the Venetian army and forced Trivulzio out of Milan, allowing Sforza to be proclaimed Duke with their support; La Palice was then forced to withdraw across the Alps. In 1512 Thomas Grey, 2nd Marquess of Dorset led an unsuccessful English military expedition to France to reconquer Aquitaine, which England had lost during the Hundred Years' War. Ferdinand of Aragon gave none of the support he had promised. While Ferdinand delayed and tried to persuade Dorset to help him to attack Navarre instead of Aquitaine, the English army's food, beer, and pay ran out, many took to wine and became ill, and the army mutinied. Back in England, Dorset had to face a trial. In late August, the members of the League met at Mantua to discuss the situation in Italy and the partition of territory acquired from the French. They quickly came to an agreement regarding Florence, which had angered Julius by allowing Louis to convene the Council of Pisa in its territory; at the Pope's request, Ramon de Cardona marched into Tuscany, smashed Florentine resistance, overthrew the Florentine Republic, and installed Giuliano de' Medici as ruler of the city. On the subject of territory, however, fundamental disagreements quickly arose. Julius and the Venetians insisted that Maximilian Sforza be permitted to keep the Duchy of Milan, while Emperor Maximilian and Ferdinand maneuvered to have one of their relatives installed as duke. The Pope demanded the annexation of Ferrara to the Papal States; Ferdinand objected to this arrangement, desiring the existence of an independent Ferrara to counter growing Papal power. The Emperor refused to relinquish any Imperial territory, which in his