I really disagree with the brainwashing/farming comments. I highly doubt somebody is so easily manipulated that they will join the military only because of a video game; and to be honest if somebody is so extremely impressionable like that then they must be incredibly simple. People don't give enough credit to children/teens, they aren't retarded. They can think for themselves, and decide what is best for themselves. Some people in this thread are acting like they think on a similar level of a dog.
intelligence has no bearing on the kind of malleability inherent in most teenagers. granted intelligence or lack thereof could have an impact on your joining the army ('theres no way ill get shot!!!') but susceptibility to manipulation in general is just part of being young. that's what being young is about; you absorb stimuli and make decisions and grow accordingly. i'm not going to say that joining the army is a poor decision because that has no impact on my argument. but it's undeniably a big fucking decision.
i also dont think you totally understand the problem that i and the op have here. no one is saying 'call of duty alone makes people join the army'. we're saying its symptomatic of a warped, war-glorifying culture that puts a lot of pressure on young people to fight for their country.
being a teenager is not easy. you're crazy with hormones and you want to impress girls and you probably want to impress your parents and you want people to like you and you want to make money and you want to be in control and you want to believe in something. all that shit rushing through your head makes it very, very challenging to rationally decide whether you want to risk your life. the fact that the military is considered the ultimate authority only exacerbates this.
people more intelligent than i am have made significantly worse decisions than i have solely due to external pressures. it is disingenuous and facile to call them simple.