From the British, Richard I and Edward I (in Palestine) and Henry IV (in his youth, he fought with the Lithuanians under the banner of the Livonian Order) participated in the Crusades. From the French – Louis VII (in the Second Crusade), Philip II (in the Third Crusade with Richard I) and Louis IX Saint (in Egypt and Morocco). The results of the campaigns in all cases were insignificant.
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.