The first urban uprising in the occupied Europe and the most significant armed action in the occupied Poland since the September Campaign, 1939. Other insurrections raised by Jews included those in the Wilno, Częstochowa and Białystok ghettos; some riots were also initiated by prisoners of the Sobibór, Auschwitz and Treblinka camps. The Warsaw Ghetto Uprising was the most significant act of Jewish armed resistance during World War II.