"(Why does the US still have troops in Japan and Germany, I wonder?)... Well, perhaps (for Germany) because it enables soldiers to visit lots of exotic places without really feeling lost as many Europeans know english (that's what I was told by them in Germany in 1982). And we're at peace)."

"August 18, 2004
"They said President Bush is retaliating by announcing that tens of thousands of U.S. troops will be withdrawn from their country over the next seven years.
...
But European defense analysts said the U.S. decision to redeploy up to 70,000 troops from Germany and Asia was largely expected and based on common sense. The presence of about 100,000 U.S. troops in Europe today is expensive, largely symbolic and, as Bush stated Monday, a relic of Cold War conditions that no longer exist."
http://www.signonsandiego.com/uniontrib/20040818/news_1n18troops.html

So as far Europe or Germany is concerned, the US is still in process of leaving. By today date it's unlikely that it is down to 30,000, yet. But considering it was in the hundreds of thousands during Cold war it's a significant drop. And Japan has had reduction and has a couple tens of thousands- and of course, S Korea also has had troop reductions.

The US of course has troops deployed in all kinds of places in the world mostly very few forces. It seems likely that Africa will a likely place that more US forces will be stationed in the future. But it seems unlikely that the US will "ever" deploy as many soldiers as it once did with Europe anywhere else in the world.