Link
I found this to be true. When I returned from combat in Iraq, my anger-response was tuned to the battlefield; not to dealing with average Americans back home.
Since I returned not to work, but to continue my post-graduate studies, I had all the free time of a student. A friend with whom I had served in combat and I played hours of
Battlefield 1942- the
Desert Combatmod - which simulates combat in the Middle East. The hours of play each week allowed me to vent my frustrations in a healthy way - rather than by raining all over someone else's parade.
I credit the gaming with part of my rehabilitation to 'normal' civilian life.
Links to other sample studies/articles:
Link 1
Link 2