That said, the other difference is that in wartime if 1/100 pilots crashed because they couldn't find the fuel switch in a PA28 it would hardly materially affect their life expectancy, whereas in peacetime it would cause a significant spike in the accident statistics.
I think service training in those days was that, though you would not get dual in the fighters you would sit in the cockpit going through the drills until you could do them with your eyes closed, so finding the fuel or any other switch would not have been the problem