 On 14 May 1643, Louis XIII died; his five year old son, Louis XIV, became king, his mother, Anne of Austria, taking control of the Regency Council that ruled in his name.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.