On 15 March 1939 Bohemia and Moravia were occupied by Hitler's armies and proclaimed a protectorate of the Third Reich. Schwarz knew that as a Jew his life would be in danger if he remained in Prague until the Nazis arrived so, immediately after Bohemia and Moravia were occupied, Schwarz left Prague and returned to Slovakia where he felt more safe.
On 15 Mar 1939 Bohemya at Moravia ay ginagawa sa pamamagitan ng Hitler's armies at proclaimed isang ipinagtatanggol na lugar ng Ikatlong Reich. Schwarz, alam na bilang isang Hudyo sa kanyang buhay ay magiging sa panganib kung siya ay nanatili sa Prague hanggang sa Nazis arrived kaya, kaagad pagkatapos ng Bohemya at Moravia ay ginagamit, Schwarz kaliwa Prague at ibabalik sa Slovakia kung saan siya nadama mas ligtas.