The victory of Louis XI of France over Charles the Bold in 1477 and the annexation of Picardy to the French royal domain marked the end of a status quo over the possession of Calais. For nearly a century the House of Valois had preferred to turn their armies towards Italy, rich and technologically ahead of the rest of Europe, rather than take Calais. France had to fight the English on three occasions during the sixteenth century (1526, 1544, and 1547) when they attempted to extend the English possessions in Picardy. At the behest of Pope Paul IV, in 1557 France put an end to the Truce of Vaucelles which concluded the tenth Italian war, and resumed hostilities in the Kingdom of Naples. In response, the crown of Spain returned to its customary strategy since the Battle of Ceresole: it again attacked in Picardy, and inflicted a crushing defeat on the Constable of Montmorency at the Battle of St. Quentin (1557). Henry II of France had lost his best captains and the road to Paris was open to invasion. In these circumstances, Francis, Duke of Guise, who had raised an army and prepared to lead it in Italy, was recalled to Picardy and promoted to lieutenant-general of France. To avoid the intervention of an English expeditionary force, King Henry II of France arranged, in great secrecy, to attack Calais in the winter with 30,000 men assembled at Compiegne, Montreuil-sur-Mer, and Boulogne-sur-Mer.