However, Lieutenant (later Hauptmann) Hermann Detzner, a German officer, and some 20 local policemen evaded capture in the interior of New Guinea for the entire war. Detzner was on a surveying expedition to map the border with Australian-held Papua at the outbreak of war, and remained outside militarised areas. Detzner claimed to have penetrated the interior of the German portion (Kaiser Wilhelmsland) in his 1920 book "Vier Jahre unter Kannibalen" ("Four Years Among Cannibals"). These claims were heavily disputed by various German missionaries, and Detzner recanted most of his claims in 1932.