There are various urban legends left over from the Second World War, and the Pacific War in particular. One of them tells of a group of disappearing reconnaissance scouts.
A unit of soldiers stationed in the Philippines were tasked with scouting the jungle the men were using as their base. Their voices soon came back over the wireless.
“There’s a large stone or something.”
“There’s somebody else here.”
Those were the last things they ever said. The entire unit disappeared and was never seen again. Rumours suggested that some indigenous people still lived in that jungle, and it was they who killed the soldiers. The men, unfamiliar with the jungle terrain, got too close to their village, and so all of them were wiped out… or so they say.