The War of the Spanish Succession was a war fought between 1701 and 1714, in which several European powers combined to stop a possible unification of the Kingdoms of Spain and France under a single Bourbon monarch, upsetting the European balance of power. It was fought mostly in Europe, but it included Queen Anne's War in North America. The war was marked by the military leadership of notable generals like the duc de Villars, the Jacobite Duke of Berwick, the Duke of Marlborough and Prince Eugene of Savoy.