Life experience in addition to personality shapes political views. This is a generalization but I find that people with conservative political affiliations are more likely to choose a career in the military. Of course there are exceptions to the rule. I am currently in Iraq, and have seen many interesting things since being in country. I could certainly understand how instances arise that could cause someone to become against war as a matter of principal while over here. I also know many people on their 3rd or 4th deployment to this place that believe in this war, and war in general as a necessary evil. I believe the way you react to a place like this has to do with how you were raised, what specific incidents you are involved with in country, and your understanding of why those events occurred. Sure, if you believe your best friend died in Iraq for no reason, you may be inclined to be a conscientious objector. Regardless of my personal views, I think those that have been here and experienced it have a strong argument to be "anti-war" if they choose. Most of my Marines are 2 or 3 time veterans of this place, and I see a mix of views amongst them.