The situation changed in July 1706 when Vendôme and any available forces were sent to reinforce France's northern frontier after their defeat at Ramillies. Reinforced by German auxiliaries, Prince Eugene broke the Siege of Turin in September; despite a minor French victory at Castiglione, the war in Italy was over. To the fury of his allies, in the March 1707 Convention of Milan Emperor Joseph gave French troops in Lombardy free passage to Southern France.