I remember a survivor of the Holocaust at a high school assembly in 1947. When asked why they didn't fight the Germans although they knew about the death camps she said "But we had no guns". The Philipinoes during the Japanese occupation made guns using gas pipe. Four gas pipe guns killed four sentries. 4 Philipinoes armed with Japanese rifles could take a Japanese machine gun. Eventually the Japanese only moved outside major cities with very large forces. Our Philippine mess cook was there.