Not really a "weapon" per se, the Army's...in fact, the whole U.S. military's...training system was predicated on the idea that our guys would be outnumbered and have to rely on superior training and tactics to win. Units rotating through NTC could expect to get whupped by OPFOR.
This book was published in '89, and a bit over a year later, the destruction of the Iraqi army in a hundred hours showed that the training had paid off.
Turns out the Russians didn't train that way.
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