A video covering the same topic that I thought was reasonably well done: https://www.youtube.com/watch?v=FDNyU1TQUXg https://www.youtube.com/watch?v=FDNyU1TQUXg

A video covering the same topic that I thought was reasonably well done: https://www.youtube.com/watch?v=FDNyU1TQUXg https://www.youtube.com/watch?v=FDNyU1TQUXg Edit: one thing covered in the video, but not mentioned in the article is the different experience of what war means in modern times. From WW1 (actually, a bit earlier), modern high explosives mean that soldiers spend days, weeks, even months under high stress and constant threat of death. Ancient soldiers tended to participate in violent, but relatively short battles (a day or two at most). The vast majority of the time, they were not under the same levels of stress.