Germany–Japan relations of the Allied prosecutors to portray the limited cooperation between the Third Reich and Imperial Japan as a long-planned conspiracy to divide the world among the two Axis-partners and thereby delivering just another demonstration of the common viciousness expressed by alleged joint long-term war plans. Although there was a limited and cautious military cooperation between Japan and Germany during the Second World War, no documents corroborating any long-term planning or real coordination of military operations of both powers exist. After their defeat in World War II, both Japan and Germany were occupied. Japan regained its sovereignty with the Treaty of
War crimes in occupied Poland during World War II at Chełmno according to postwar verdict by West Germany, although up to 340,000 victims were estimated by the Polish Main Commission for Investigation of German Crimes in Poland (GKBZNwP), a predecessor of the Institute of National Remembrance. Following the Wannsee Conference of 1942, as part of highly secretive Operation Reinhard in occupied Poland, the German government built three regular killing centres with stationary gas chambers. It was the most deadly phase of the Final Solution, based on implementing semi-industrial means of killing and incinerating people. The new facilities included Treblinka extermination camp (set up in July 1942), Bełżec (March 1942),