The Battle of Leuze took place on 18 September 1691, and was a famous French cavalry victory in the Nine Years' War, against a superior allied force. Marshal Luxembourg was informed that William III of Orange had left for England in the supposition that the campaign of 1691 was at its end. He was also informed that Waldeck, who was left in charge, was preparing to retire into winter quarters. Marshal Luxembourg was near Tournai and sent out reconnaissance under Marsilly, that told him that the main body of the allied army was moving away, leaving a rear-guard of cavalry at Leuze.