The Battle of Lauffeld - bloodier than Fontenoy - opened France's 1747 campaign in the Netherlands. The Duke of Fitz-James fought there before joining the Siege of Bergen op Zoom (1747) by Lowendahl. He also fought at the Siege of Maestricht when peace was signed between France, Britain and the Netherlands in 1748. Hostilities were barely over when, on 10 May 1748, the Duke of Fitz-James was promoted to lieutenant general. He was also made a peer of France and knight of the orders of the King (received 2 February 1756).