My father spoke German, so I can understand moving us to Germany when the wall was up and then moving us away when it came down. And the big language school is in California, so I can get why we moved there... but then we moved to Hawaii, and then to Texas(where we'd lived before Germany).
And this is a pretty standard military thing, from my understanding. We spent 3 years in each place and then got shipped elsewhere.
Why? The military pays most of the moving costs, so this can't possibly be the most efficient way to have people where you need them.