 In the 1690s and early 18th century he went on to hold several eminent positions.He served as a diplomat during the War of the Spanish Succession, as envoy to Maximilian II Emanuel, Elector of Bavaria in Brussels, and to the duke of Savoy in Turin, whom he persuaded to join the Grand Alliance.Hill made the allies guarantors for the Vaudois, a medieval heretic sect, later Protestants, who had suffered centuries of persecution by the dukes of Savoy, and they were guaranteed toleration, so that the Vaudois pastors placed him 'at the head of our Nehemiahs' (Diplomatic Correspondence, 2.973).