Sorry, but I have removed this question because it essentially seems to be trivia-seeking.

Your question is not quite a poll-type question, nor is it a throughout history type question. But, it has the same basic problem: it invites a large number of superficial answers that amount to name-dropping.

Answers like "read about the Black Prince" or "not Western Europe, but there were several military manuals called Strategicon written by Byzantine authors" might technically answer your question, but fall far short of the ideal of full and scholarly answers.