Every single war in human history has come when deities revealed themselves to humanity. There wasn't big wars on Earth when people were still "most peaceful" ape-like creatures, but when deities arrived and started sharing knowledge, they required payment, sacrifice. So really, every single war in human history has been to satiate the hunger of deities (think of the anime FMA; where two nations have to fight for Philosopher's stone to be created). The generals and soldiers die, but the underlying powerful bloodlines/elite, they never fucking die in any war, ever. That nations need to expand/claim territory or have wars with their neighbours? That's just appearances to keep people from discovering the true reason they HAVE TO die, to keep deities hungers satisfied. It's all a big fucking red herring
