I think that I heard somewhere that PTSD had always existed, of course, but was just less common for soldiers (year 1700 and earlier, specifically Europe) than it is nowadays. But why? If this is true. Is it because of how death and killing was such a big part of society back then? So seeing it in action would be less terrifying? And I would assume that the battlefields and wars back then would have looked a lot worse than they do today. The worst someone might see today is someone's head exploded. But half the weapons back then did that as well.