Which war-related experience does not seem to increase the risk of a stress reaction?

I believe the answer is multiple deployments
multiple deployments refers to the millitary personels who were assigned to the battlefield more than one round of millitary assignments.
For the first timers, the rookies tend to haven't realized cold hart truth about the horror that one might experience in the battlefield.
These people would develop higher level of stress for the next assignments because they already realize the worst case situation that they might have to face.

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.