It was not of course always the case, at least not in Germany, Italy and Japan- where we also imposed governments. We were once occupiers there. Now we merely have troops stationed there.
It is entirely possible (I'm not saying desirable) that we could maintain troops in Iraq for decades on the same terms as those in Europe, i.e. having no authority. That would no longer be an 'occupation.'
That sounds so odd to one who grew up on and around military bases. To me they're Us.I can't help but find those sudden reminders of near military presence upsetting. I shrink from the sight of them involuntarily, you know? - because I'm a civilian and it's a weird feeling to be overtaken by military on the way to the 7-11.