@jeff @bastianallgeier hey I'm just letting you know what modern science says about brain development and the ability to understand empathy and make correct decisions.
Personally my granddad who served in the US didn't want to talk about the horror he witnessed as a good guy. I doubt he would want to try and have his young grandchild try to understand why he did what he did. What lead to his life being the way it is.
At 16 he was still a boy impressionable wrapped up in a storm of prognada and lies spread by the state. The people were supposed to trust.
Being a soldier is hard and they suffer more than any of civilians can know.