Jewish Military Union
Jewish partisan groups of note include the Bielski partisans who operated a large "family camp" in Belorussia (numbering over 1,200 by the summer of 1944), the Parczew partisans of southeast Poland, and the United Partisan Organization which attempted to start an uprising in the Vilnius Ghetto in Lithuania and later engaged in sabotage and guerrilla operations. Thirty-two Jews from the Mandate for Palestine were trained by the British and parachuted behind enemy lines to engage in resistance activities. In the Warsaw Ghetto Uprising, two groups of partisans, the right-wing Jewish Military Union (Żydowski Związek Wojskowy, ŻZW) and the left-wing Jewish Combat Organization (Żydowska Organizacja Bojowa, ŻOB) led the uprising separately.