Humanity has always possessed a knack for mindlessly repeating weird themes in all aspects of life, up to and very much including classic art. The only difference is that their themes were somehow even stranger.
As awful as war is, it has a way of bonding people. We'd imagine that goes double for these guys, who found themselves having to pretty much fight battles themselves.
Some of what you think you know is wrong, some of it is misconstrued, and most of it just left your head completely the minute 8th grade history ended.
It turns out that a lot of the stuff that defines the modern battlefield has been around in some form for a lot longer than we think, thanks to murderous geniuses who were decades or centuries ahead of their time.
We humans are what we are due to help from a series of creatures most of us have very little respect for. So let's take a moment to appreciate them a little.