Despite its history as a prison , the Citadel was not used to hold National Socialist war criminals .
After the division of Berlin by the Allied powers , Spandau and its Citadel were part of the British sector .
Despite Citadel 's history as a prison , the Citadel was not used to hold National Socialist war criminals .
After the division of Berlin by the Allied powers , Spandau and its Citadel were part of the British sector .