The initiative for including the expulsion of ethnic Germans from Hungary in the Potsdam " Big Three " conference , in August 1945 , came from the Soviet Union . They together with the Hungarian Communist Party wanted to use the argument of the collective guilt of the Swabians to cover their real purpose for a radical land reform . In the Spring of 1945 , Marshall Voroshilov demanded from the Hungarian government the complete expulsion of the Germans from Hungary . All those ethnic Germans who declared German as their native language were considered eligible for transfer . The Hungarian government estimated the number to be removed from Hungary to be from 200,000 to 250,000
Potsdam " Big Three " conference
Potsdam Conference
Germans of Hungary