This is the 14090th most frequent Russian word.
оккупационных
"Occupational" or "related to occupation (military occupation)."
Here, 'оккупационных' modifies 'zones,' referring to areas under occupation control.
Проблемы в оккупационных зонах часто остаются нерешёнными.
Problems in occupation zones often remain unresolved.
In this case, 'оккупационных' describes the authorities as representatives of the occupying force.
Символы оккупационных властей вызывали негативные эмоции.
Symbols of the occupation authorities evoked negative emotions.
The word 'оккупационных' is used as an adjective here to describe the soldiers who were part of the occupation forces during the war.