The politically-correct military policies chosen by our Presidents, Congress, and DoD leadership over the past 25-30 years — but radically accelerated by both the Clinton and Obama Administrations (and unopposed by the lackluster GWBush Administration) virtually guarantee failure regarding your observation.
What do I mean? I mean that continually imposing leftist social-engineering templates on the military drives red-blooded, God-fearing men from joining up in the same numbers that I believe they would if the military still segregated men and women in the barracks, still banned open homosexual behavior/proclivities, still kept females off subs, still kept the atheist and wiccan services out of the chapels, etc, etc.
In fact, I have read more than one comment in the FR Forum by FReepers who have said that they cannot in good conscience encourage their sons to join the military today, given its flawed policies and politically-correct leadership.
So some men are afraid of setting the right example or are they like Romney’s boys?