 A second wave of deportations, accompanied by ethnic cleansing, hit Magnuszew in World War II, when the German occupants deported its Polish inhabitants to Germany as slave workers, while the Jewish population was imprisoned in a ghetto in Magnuszew.In 1942 the ghetto was liquidated, and the Jews were either shot on the spot or transported to the Treblinka extermination camp where they were killed by gas.In 1944, as part of Operation Bagration, the Red Army established a bridgehead at Magnuszew, (at times also called the Warka bridgehead).