I would say it does. Lots of psychological trauma in Desmond Doss's family and growing up played into his heroism, I think. His father, a WW1 Army Veteran, a Cpl. and highly decorated for action in France, had signs of PTSD, lost his three best friends in action at Belleu Wood in 1918- and returned an angry alcoholic, whose guilt at surviving that hell-hole in France made him a wife-beater, and in the movie, during the Depression in Lynchburg VA, had no signs of a job, although they had a house, meals, a car, and he had money to buy booze, apparently. Back then, the wives didn't work outside the home, pre WW2 and the "Rosie The Riveter" scenario didn't exist, at least in the Appalachian area of Eastern USA--
His boyhood skills at mountain climbing, using ropes and other items related to that activity, played out well when he was a Medic and saw hard combat and all its terror in Okinawa 1945-
The horrors of brutal CQC, well portrayed by director Steven Spielberg in "Saving Private Ryan", especially the opening scenes at Omaha Beach 6 June 1944- are magnified in the combat scenes in this epic movie. You will need a strong stomach to watch the combat scenes with the fanatical Japanese troops who want to die in heroic glory for their Emperor, and believe that surrender is an act of cowardice.
