 Five days later, Condé, then known as the duc d'Enghien, defeated the Spanish Army of Flanders at Rocroi; less decisive than often thought, the loss of this highly experienced unit ended Spanish dominance of the European battlefield.Condé, a member of the royal family, and effective ruler of large parts of eastern France, used it as leverage in his struggle for political control with Anne, and Cardinal Mazarin.Despite limited success in Northern France and the Spanish Netherlands, including victory at Lens in August 1648, France was unable to knock Spain out of the war.