This is the 5286th most frequent Russian word.
оккупированные
"Occupied."
In this sentence, 'оккупированные' modifies 'городов', indicating that these cities were under occupation.
Жители оккупированных городов страдали от нехватки продовольствия.
The residents of the occupied cities suffered from food shortages.
Here, 'оккупированные' is used as an adjective to describe 'здания', highlighting that these buildings were under occupation.
После войны многие оккупированные здания перешли в руки государства.
After the war, many occupied buildings were transferred to state ownership.
The word 'оккупированные' here is used as an adjective derived from the verb 'оккупировать' meaning 'to occupy'. It describes the territories that were under occupation.