The reason why you do history, and particularly why you do war, is that you want to make sure that in the next war, some lessons were learned. There's a saying: "History doesn't repeat itself, but it does rhyme." Or Ecclesiastes: "What has been will be again. What has been done will be done again." Human nature always superimposes itself - its strength and its frailty over the rush of chaos of ongoing events - and we can perceive patterns and themes and motifs.