Lessons from Vietnam

Three scary lessons:

In Vietnam we learned after it was over that about one third of those we armed and trained were actually in the Viet Cong Army. This meant surprise operations were impossible and a significant part of our force was actually on the other side. There is every reason to believe that this is true now in Iraq.
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In Vietnam, another roughly one third of the trainees in the Republic of Vietnam's army (ARVN) would quickly take the weapons they were given and sell them on the black market. In Iraq we again see signs of the same thing with large desertion levels and US weapons showing up in insurgency hands.
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The remaining ARVN troops, neither secretly the enemy or ready to desert and sell what they had been given, were in it for the pay and for the prestige and the opportunity to plunder. It was no wonder that despite years of training and the provision of equipment far superior to the enemy the ARVN was never capable of winning either the guerrilla war or the full scale battles that marked the final stages of the conflict. This was not for lack of training but for lack of commitment.