I killed people in Afghanistan. Was I right or wrong? - The Washington Post: Many veterans are unable to reconcile such actions in war with the biblical commandment “Thou shalt not kill.” When they come home from an environment where killing is not only accepted but is a metric of success, the transition to one where killing is wrong can be incomprehensible.
This incongruity can have devastating effects. After more than 10 years of war, the military lost more active-duty members last year to suicide than to enemy fire. More worrisome, the Department of Veterans Affairs estimates that one in five Americans who commit suicide is a veteran, despite the fact that veterans make up just 13 percent of the population.