My favorite story about the application of statistics to the second world war, is the `German Tank Problem`. Statisticians' estimate of German Panther tanks proved to be much more closer to the real number than conventional intelligence estimates. https://en.wikipedia.org/wiki/German_tank_problem
Or perhaps we're seldom willing that level of resources without great pressures. Even the much lower current US expenditures on research have been shown to be hugely rewarding economically we've kept cutting them. Pressure inducing behavior changes isn't quite the same as evolution, it happens on a much shorter time scale and isn't likely to follow the same curves when you remove the stimulus.
Economists had similar experiences. I ate lunch with Tom Schelling frequently in the period 1979-81, and got the impression that WW2 had been one of the most intellectually exciting times of his life.
And of course something similar is true of physicists and engineers.