Or.. maybe it is just being used to describe location? As an example we say "Bataan Death March". That does not mean that Filipinos we responsible for the atrocities. It describes a location. We do not say "Imperial Japanese Occupied Bataan Death March" We also do not say things like "US Occupied Ramstein Airbase". The end to the Four Power Reserved rights and really the "official end" to Germany's occupation from WW2 did not occur until 1990 (and that was actually when the final [until its not final] agreement on German / Polish boarders was established too).