My Dad was in the Navy Amphibious Forces in the Pacific and was in Australia and then New Guinea in 1942-1943.
He never said much about his experiences in the PTO in WW2, but when his brother (an ETO vet) would visit, he used to talk from time to time about some of the Papuan
headhunters (as he called them) encountered in New Guinea - how the Japanese feared them and how they were recruited by the Allies to help with personnel recovery from the jungles.
He said they never saw any '
headhunting' or cannibalism, but it was not unusual to encounter decapitated Japanese soldiers and there were enough rumors to make them wary of the natives.
He had an album with some pics of him standing in fatigues and pith helmet with his holstered .45 and a Thompson among some of the Papuan natives in their villages - National Geographic looking bare-chested women and pretty fierce looking warriors.
Richard