 Complete the following phrase:  After the invasion of Poland, which started World War II, Kartuzy was occupied by Germany, where it was administered as part of Reichsgau Danzig-West Prussia, Regierungsbezirk Danzig. In mid-September 1939 the SS Wachsturmbann Eimann and Einsatzkommando 16 entered the town to carry out mass arrests and massacres of local Poles as part of the 