Emperor Charles V would go on to rule one of the largest and most sprawling empires in European history. As a consequence, Charles was nearly constantly at war, fighting France, England, the Papal States, the Ottoman Turks, the Aztecs, the Incas, and the Protestant Schmalkaldic League during his reign. Spain would provide the bulk of the Habsburgs' armies and financial resources over this period. Charles placed Castilians in high governmental positions in both Castile and the Empire at large, and generally left the administration of Castile in Castilian hands. In that sense, the revolt could be considered successful.