GI Schmo, How low can Army recruiters go?

[Rose Siding]

Three months ago, I wrote that the war in Iraq was wrecking the U.S. Army, and since then the evidence has only mounted, steeply. Faced with repeated failures to meet its recruitment targets, the Army has had to lower its standards dramatically. First it relaxed restrictions against high-school drop-outs. Then it started letting in more applicants who score in the lowest third on the armed forces aptitude test—a group, known as Category IV recruits, who have been kept to exceedingly small numbers, as a matter of firm policy, for the past 20 years......
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The pattern is clear: The higher the score on the aptitude test, the better the performance in the field. This is true for individual soldiers and for units. Moreover, the study showed that adding one high-scoring soldier to a three-man signals team boosted its chance of success by 8 percent (meaning that adding one low-scoring soldier boosts its chance of failure by a similar margin).

The evidence is overwhelming. Take tank gunners. You wouldn't think intelligence would have much effect on the ability to shoot straight, but apparently it does. Replacing a gunner who'd scored Category IV on the aptitude test (ranking in the 10-30 percentile) with one who'd scored Category IIIA (50-64 percentile) improved the chances of hitting targets by 34 percent. (For more on the meaning of the test scores, click here.)
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Smarter also turns out to be cheaper. One study examined how many Patriot missiles various Army air-defense units had to fire in order to destroy 10 targets. Units with Category I personnel had to fire 20 missiles. Those with Category II had to fire 21 missiles. Category IIIA: 22. Category IIIB: 23. Category IV: 24 missiles. In other words, to perform the same task, Category IV units chewed up 20 percent more hardware than Category I units. For this particular task, since each Patriot missile costs about $2 million, they also chewed up $8 million more of the Army's procurement budget.

http://www.slate.com/id/2133908/