 Detzner received a hero 's welcome when he returned to Germany . He wrote a book about his adventures — Four Years Among the Cannibals in the Interior of German New Guinea under the Imperial Flag , from 1914 until the Armistice — that achieved notoriety in Great Britain and Germany , entered three printings , and was translated into French , English , Finnish and Swedish . He received a position in the Imperial Colonial Archives , and appeared frequently on the lecture circuit throughout the 1920s . In the late 1920s , scientific portions of his book were discredited . In 1932 , he admitted that he had mixed fact and fiction and , after that time , eschewed public life . 
