The Battle of Cassel was fought on April 11, 1677, as a part of the Franco-Dutch War. It resulted in a French victory under Philippe I of Orléans, assisted by the Duke of Humières and Marshal Luxembourg, against the Dutch under William III of Orange, stadtholder of the Netherlands. The battle took place near the city of Cassel, 30 km south of Dunkirk in present-day France. Source here.
