 He believed that the sparsely populated and barren Negev desert offered a great opportunity for the Jews to settle in Palestine with minimal obstruction of the Arab population, and set a personal example by settling in kibbutz Sde Boker at the centre of the Negev.During this period, Palestinian fedayeen repeatedly infiltrated into Israel from Arab territory.In 1953, after a handful of unsuccessful retaliatory actions, Ben-Gurion charged Ariel Sharon, then security chief of the northern region, with setting up a new commando unit designed to respond to fedayeen infiltrations.