Original: The Gleiwitz incident was a staged attack by Nazi forces posing as Poles on 31 August 1939 , against the German radio station Sender Gleiwitz in Gleiwitz , Upper Silesia , Germany ( since 1945 : Gliwice , Poland ) on the eve of World War II in Europe .
Simplified: This attack along with other Nazi activities was used to make people think that Poland attacked Germany and that Poland , not Germany started World War II .