This article examines the social experience of belonging to the British section of the international Socialist Zionist youth movement, Hashomer Hatzair. The study is based on interviews conducted with 10 former activists across four generations and focuses primarily on the movement in London. It will be argued that Hashomer Hatzair represented a unique alternative youth culture based on a model developed by the movement's founders in the Austro-Hungarian Empire. This model synthesized Robert Baden-Powell's Scouting, the Jugendkultur of the German youth movements, Socialist Zionism and Marxism.