The thing about the army experience/kills is that surely this is bigger than him? This is about the military in general, and how they’re trained, and global power and nu colonialism, and quite probably toxic masculinity, and the wrongness but sadly seeming humanness
of going to war and killing other people. You’re right, it’s a vicious cycle that needs to be stopped and never seems it will be
Of course he did choose that life for himself knowing where it could lead…
There was an HBO show based on the articles written by a Rolling Stone journalist who joined US marines on a tour of Iraq. It’s a difficult watch in places but I remember it being good at showing the soldiers as people and helping you form empathy with at least some of them, but then showing awful jarring bits of them dehumanising (and sometimes killing) the enemy, including real life quotes at the end which were outright chilling.