1939 November, JEWISH MILITARY ORGANIZATION (ZZW) (Poland)
Major Henry Iwanski, a Polish officer, met with Lieut. David Appelbaum, Henryk Lifszyc, Kalman Mendelson and Yehuda Bialoskara, all former Jewish officers of the defeated Polish army and members of the Betar-affiliated Brit Hachayal. They decided to create an underground organization which was first called Swit. It soon developed into the ZZW (Zydowski Zwiazek Wojskowy) led by Appelbaum to fight the Germans and received their first weapons. The ZZW was mostly comprised of Zionist revisionists and Betarim - followers of Ze'ev Jabotinsky. The ZZW played a vital role in the Warsaw ghetto uprising as well as in the forests as partisans.