Under Charles V, Spain fought with France and German Protestants, including on Italian soil. Philip II at the beginning of his reign waged war with the rebellious Netherlands. After 30 years, when England began to actively help the rebels, Philip decided that without defeating England he could not suppress the rebellion in the Netherlands. But during this time, the British pirates created a powerful fleet with the help of the royal power.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.