The Man From Down Under.

Australian soldier Jocko Wilson (Charles Laughton) admires the spirit of a destitute Belgian orphan who fights a larger boy. He buys a tavern and trains the boy to fight, while Mary is sent off to a boarding school. Nipper knocks out the British Empire's boxing champion for the title. With his profits, Jockon buys an isolated hotel in Northern Australia, where Nipper recuperates. The hotel is attacked by Japanese bombers, killing all the Japanese airmen and rescuing Aggie and the children being sheltered there.