The military is often perceived by well-meaning Americans as the last stronghold against the progressive march through America’s institutions. But this is no longer simply the case. Our Armed Forces were once the envy of the world, in large part because we selected based on merit, and instilled in our fighting men an unshakeable military ethos. Both the ethos and the selection, however, have been in steady decline as the Department of Defense succumbs to a dangerous ideology: selection and...