Complex sentence: Until World War II, Będzin had a vibrant Jewish community but in September, 1939 the German Army (Wehrmacht) overran this area, followed by the SS death squads (Einsatzgruppen), who burned the Będzin synagogue and murdered many of the Jewish inhabitants.
Split into simpler sentences: Until World War II, Będzin had a vibrant Jewish community. In September, 1939 the German Army (Wehrmacht) overran this area, followed by the SS death squads (Einsatzgruppen), who burned the Będzin synagogue and murdered many of the Jewish inhabitants.