Grunt existence is so unlike ‘normal’ that it may not be possible for outsiders to understand.
Unless you have humped klick after klick through the valley of the shadow of death your opinion on this topic has little weight.
Looking backwards it is now clear that what Lt Calley and his men did was wrong. Yet looking forward before the event it may have been the correct method.
May God grant Lt Calley and his men a respite from their burden.
Good post.
(and, thank you for your service.)
When you say look back I say this. When I do look back, I thank God I was never faced with something like that where I had to make a choice to get involved or to try and stop it.