See, but this is exactly the point. Even if it will be revealed that socio-ethnic considerations don't play a direct role in military classification, proving that indirect roles do will create a (justified!) outrage. How many Mofazes are there?

I repeat my strong recommendation to read Yagil Levy's book (I know some folks here read it and didn't like it). I found it absolutely enlightening, and in light of what he wrote, it wouldn't surprise me if military tests are geared - probably not as a conscious conspiracy - to maintain traditional, or new elites, in a position of more alternatives.