Complex sentence: Wilhelm Koppe (1896-1975) was a German Nazi commander ("Höhere SS und Polizei Führer, HSSP, SS-Obergruppenführer") reponsible for numerous atrocities against Poles and Jews in Reichsgau Wartheland, General Government, during the occupation of Poland.
Split into simpler sentences: Wilhelm Koppe (1896-1975)-German Nazi commander ("Höhere SS und Polizei Führer, HSSP, SS-Obergruppenführer"). Reponsible for numerous atrocities on Poles and Jews in Reichsgau Wartheland, General Government, during occupation of Poland.