se as ▁port ) ▁was ▁removed ▁from ▁the ▁juris diction ▁of ▁Bre men ▁and ▁made ▁a ▁part ▁of ▁Wes erm ünd e , ▁then ▁a ▁part ▁of ▁the ▁Pr uss ian ▁Province ▁of ▁Han over . ▁ ▁Bre mer h aven ▁was ▁one ▁of ▁the ▁important ▁har b ours ▁of ▁em igration ▁in ▁Europe . ▁ ▁As ▁possibly ▁the ▁most ▁critical ▁North ▁Sea ▁base ▁of ▁the ▁Naz i ▁War ▁Navy , ▁the ▁Kriegs marine , ▁ 7 9 % ▁of ▁the ▁city ▁was ▁destroyed ▁in ▁the ▁Al lied ▁air ▁bomb ing ▁of ▁Bre men ▁in ▁World ▁War ▁II ; ▁however , ▁key ▁parts ▁of ▁the ▁port ▁were ▁deliber ately ▁sp ared ▁by ▁the ▁Al lied ▁forces ▁to ▁provide ▁a ▁us able ▁har bour ▁for ▁supp lying ▁the ▁Al lies ▁after ▁the ▁war . ▁All ▁of ▁Wes erm ünd e , ▁including ▁those ▁parts ▁which ▁did ▁not ▁previously ▁belong ▁to ▁Bre mer h aven , ▁was ▁a ▁post war ▁enc lave ▁run ▁by ▁the ▁United ▁States ▁within ▁the ▁British ▁zone ▁of ▁northern ▁Germany . ▁Most ▁of ▁the ▁US ▁military ▁units ▁and ▁their ▁personnel ▁were ▁assigned ▁to ▁the ▁city ' s ▁Carl ▁Sch urz ▁Kas erne . ▁ ▁One ▁of ▁the ▁longest ▁based ▁US ▁units ▁at ▁the ▁Kas erne ▁was ▁a ▁US ▁military ▁radio ▁and ▁TV ▁station , ▁an ▁" Amer ikan ischer ▁Sold at ens ender ", ▁AF N ▁Bre mer h aven , ▁which ▁broadcast ▁for ▁ 4 8 ▁years . ▁ ▁In ▁ 1 9 9 3 , ▁the ▁Kas erne ▁was