Why are child soldiers a human rights violation when they happen in Africa, but a hero when they happen in America? Is it the difference between volunteering an

Why are child soldiers a human rights violation when they happen in Africa, but a hero when they happen in America? Is it the difference between volunteering and being forced to fight? That shouldn't apply to children who are too young to make those decisions themselves. He still broke the law, and the navy still didn't check his ID thoroughly. If we wanted child soldiers, the age limit would have been reduced from 16 to 13. That shows they were already socially unacceptable even during WWII.