Speaking of WW2 I've seen claims that one of the factors that helped the RAF win the Battle of Britain was there culture of pilots taking time away from the battle to rest up, relax and generally recover in between periods of intense fighting. e.g. "Talking shop" was definitely frowned on in a culture of apparent gentlemanly amateurism.

The Luftwaffe was more "professional" and worked their crews much harder and didn't take time to relax and had a culture of focusing 24 hours a day on the job.