My dad was in Korea and Vietnam, and he never talked about it either. I think it's just the way that generation was. My ex-T now works at a VA hospital in the palliative care area, and he says he can't get those guys to talk about it at all, and that they have to be talked into accepting pain meds -- they think they should just be stoic and tough it out.
My dad died 8 years ago at 70. I miss him too.
((((((((Patty))))))