Agreed. The military is incredibly scientific about their approach to testing. No test is perfect of course, but they have high levels of funding for full-time professionals to do nothing but study this in a rigorous academic way. Also worth remembering is that the military academies are ivy league, so not exactly low value institutions.

Where there is a need for personnel, there is some incentive to accept people who might not be ideal, but they are going to approach that in the most sane way possible.