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1.4 million is not the number deployed overseas. But, since many troops are in support roles, the number on the front lines actually doing the fighting is much smaller.
Since there are 140,000-odd troops in the Gulf region, that might mean that there are only 15,000 or so troops which are dedicated infantry and front-line Marines. The rest support them. The total troops in the Iraq region is about 10% of the total armed forces.
The problem is one of how many are trained to actually be up front, pulling the trigger. They're about ten percent of the Marines and the Army. In the Navy or the Air Force, even fewer.
Look at it this way. The ratio of support to combat arms troops today is something like 13:1, maybe 14:1. For a force of 1.4 million, that means that only 100,000 or so soldiers are, worldwide, trained and capable of operating in combat, on the front lines. That means that Iraq alone is taking a fair chunk of them, Afghanistan even more.
We have something like 157 military installations around the world besides those at home. It means, in the determination to carry out a _Pax America_ around the world, we're spread pretty thin, overall, by just a couple of rather small foreign wars. That's not to mention of couple of thousand combat-ready Marines in Haiti, recently, for example.
It's difficult keeping up an empire....
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