Military personnel are at high risk for developing post-traumatic stre
ss disorder (PTSD), historically 10 to 50% of all casualties. The best
treatment is to provide an opportunity for rest and ventilation of fe
elings and then to return the person to duty and to his or her peer gr
oup. Preventing the cycle of PTSD from starting and thus decreasing ps
ychiatric casualties is feasible. This can be done by promoting unit c
ohesion and morale, ensuring that individuals know their jobs, inducin
g stress during training so individuals will be better prepared to cop
e, providing realistic information about what to expect in combat, and
holding group debriefings immediately after any traumatic event. This
paper discusses various models for preventing PTSD and examines futur
e directions for the prevention of PTSD.