I'd enlist, too.
That's the problem. They won't take us. We have experience, wisdom and sheer determination on our side; we could teach the troops a lot, and have fun beating the snot out of the insurgents.
Alas, they won't even talk to us.
But I look at my office-chair activism - sending off FAXes, making telephone calls, supporting the troops (mailed off a another expensive package yesterday) and making sure everyone around me knows where I stand.
I sometimes feel that what I can do is so little compared to what I COULD do if only I were back at an Intel desk. (OOps, did I just say that last part out loud?)