OP, you often get lambasted on here for some of your postings, but thanks for posting that, I wouldn't have seen it otherwise!
James J, yes they sign up on the dotted line but just because they do that and are trained to not think doesn't make them automatons, they are still people with thoughts and feelings.
They sign up, listen to the doctrine and (on the most part) think they are going over to 'do good'...clearly that chaps belief was shaken to the ground by what he saw and what he did, clearly coming to think of himself as a terrorist rather than a good guy going to get the terrorists...
It's all just depressingly sad.
Thanks again OP, thought provoking stuff.