Original: After local dockworkers had refused to unload ammunition supplies throughout the Polish-Soviet War in 1920 , the Westerplatte peninsula ( until then a city beach ) , was also given to Poland to built up an ammunition dump and a military post within the city 's harbour .
Simplified: Similarly , the separated military post within the city 's harbour , the Westerplatte ( formerly a city beach ) , was also given to Poland .