From Vietnam Veterans Against the War, http://www.vvaw.org/veteran/article/?id=319&hilite=
Until recently, psychological "disturbances" developing from combat experiences have been viewed as something that really affects only a few people. The classic example of a man suffering "combat fatigue" has been with us since World War I. The word is never passed on about the people who, for one reason or another were able to maintain under such stress, and upon returning to their society are unable to adjust and go through their own form of "combat fatigue."
Today a phenomenon has developed from our current war in Vietnam in the form of the troops coming home and "talking about the war." Not only talking about what the war isn't, but what it is as they lived it. As an outgrowth of this move on behalf of these returning veterans and current trends being developed in group sessions some puzzling questions are beginning to be answered.
Dr. C.F. Shatan, past professor and Clinic Coordinator of the Post Doctoral Psychotherapy Training Program of New York University, while working in rap sessions with New York members of VVAW, developed a diagnosis of the situation calling it the "Post Vietnam Syndrome." The syndrome tends to be broken down to roughly nine different aspects, some or all of which can be generally relative to any individual.
Dr. Shatan also observed that "Vietnam vets need intensive working through of their experiences (debriefing) to overcome an official attitude of dehumanizing 'antigrief.'"