Very cool! Thanks for pointing out the War Heroes series to me (not seen it before, but I'm just starting to try to learn more about the early Golden Age war comics.)
These back covers are sweet! Each of the three captures a compelling message and perspective on the challenges of the time period. I really do dig the painted covers, and these are no exception.
And, speaking of painted covers, this one arrived at my doorstep just today (I'm now halfway complete with my War Comics / War Stories run):