Watch The Enemy Below (1958) (1957) HD Full Movie Free on SolarMovie. Watch The Enemy Below (1958) (1957) online free. During WWII an American destroyer discovers a German U-boat, and in the ensuing duel the American ca...During WWII an American destroyer discovers a German U-boat, and in the ensuing duel the American captain must draw upon all his experience to defeat the equally experienced German commander.