Anyone familiar with post traumatic stress disorder (PTSD) following the vietnam war?

trying to put together a realistic case study of a soldier who, after returning from the vietnam war, has been diagnosed with ptsd. i'm not quite sure how to go about researching things such as family background, medical history, and education history ... it's supposed to be a made-up case study for cl where i relate it to the psychology dsm criteria, but was wondering if anyone had any experiences (real or not) that could aid in the background aspect... Thanks so much!