David Shaltiel (1903-1969) is most well-known for being the district commander of the Haganah in Jerusalem during the 1948 Arab-Israeli war. He was born into an Portuguese orthodox Jewish family in Hamburg. At 16, Shaltiel joined the Zionist youth movement Blau Weiss, and he went to Palestine in 1923. However, he was not happy there, and returned to Europe in 1925. From 1925-1930 he was enlisted in the French Foreign Legion. In 1934 he returned to Palestine. Wikipedia
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