Quality, not Quantity, of Troops in Iraq

Here's a little armchair General-izing:
It's the quality of the troops that is deficient in the US occupation of Iraq.

Analysis, you say? Facts?
Riddle me this: why is it that the strongest army in the world, with the most advanced training and weapons systems, is incapable of quelling an insurgency 1/10 its size?
There's a trap built into the question. We are obviously mighty and well-armed, so that can't be it. Troop levels? Nah.

Could it be....our intelligence? We know our intelligence sucks from that time when those planes hit those towers. Is this seeping into the quality of the training of our troops? Could it be affecting the quality of our fight against the insurgency?

On top of all this, we are inadequately supplied, it seems. The Army National Guard revealed last Thursday that it had missed its recruiting goals for the past two months by 30 percent. According to the NY Times, nearly 900 troops have been evacuated from Iraq by the Army for psychiatric reasons, included attempts or threatened attempts at suicide. When the war in Afghanistan as well as Iraq is considered, some experts believe that the number of American troops needing mental health treatment could exceed 100,000.

I hate to say it, but I hope to God that Rumsfeld takes the fall for this.