 Following the United Nations decision on the partition plan, Lehi's turned its attention to the confrontation with the Arabs.During this period Banai participated in numerous combat operations that included the bombing of homes in Arab villages, the bombing of the Sarai in Jaffa (the Arab gathering point for attacks on Tel Aviv), the bombing of the Arab gangs' headquarters in Haifa, and an attempt to bomb the Arab headquarters in Nablus.With the formation of the Israel Defense Forces, Banai enlisted as a captain in the 8th Brigade, commanded the Lehi Battalion and served as the liaison officer between the army's Lehi units and Brigadier Yitzhak Sadeh, the commander of the Palmach.