In case you aren't familiar, I had a successful civilian career as an IS department manager prior to joining the military (taking a ~65% base pay cut.) I joined so that I'd have a chance to participate in what I feel will be viewed as my generation's war. And also to put to rest some of the calls of "chicken hawk" here in these forums. I think your figure for military personnel deployed is way off. There's around 100,000 military members in Afghanistan alone. And while most of them are not in combat jobs, the nature of insurgency is that the combat has a way of coming to you. But I don't want to get off on a tangent, my point is that I've worked in the civilian sector, I still provide services to my old employer, and I intend to work exclusively as a civilian again.
Well, you're right about one thing- I misplaced the decimal point. Counting Guard & Reserves, the US has 2.2M troops, with ~100K deployed in Afghanistan.