The Catholic Monarchs had developed a strategy of marriages for their children to isolate their long-time enemy: France. The Spanish princesses married the heirs of Portugal, England and the House of Habsburg. Following the same strategy, the Catholic Monarchs decided to support the Aragonese house of Naples against Charles VIII of France in the Italian Wars beginning in 1494. Ferdinand's general Gonzalo Fernández de Córdoba took over Naples after defeating the French at the Battle of Cerignola and the Battle of Garigliano in 1503. In these battles, which established the supremacy of the Spanish Tercios in European battlefields, the forces of the kings of Spain acquired a reputation for invincibility that would last until the mid-17th century.