The Jewish Combat Organization (Polish: Żydowska Organizacja Bojowa, ŻOB; Yiddish: ייִדישע קאַמף אָרגאַניזאַציע Yidishe Kamf Organizatsie; often translated to English as the Jewish Fighting Organization) was a World War II resistance movement in occupied Poland, which emerged from the merger of five Jewish political and youth organizations: Hashomer Hatzair, the Polish Workers' Party, Habonim Dror, Poale Zion, and the Bund, and was central in organizing and launching the Warsaw Ghetto Uprising. ŻOB took part in a number of other resistance activities as well.