What all this is based on is that a local museum received a Nazi artillery officer's tunic. The donor said it was brought home by an uncle who was indeed taken prisoner in the Philippines (plenty of verification for this), and remained a prisoner until war's end. The donor then said his uncle was given the Nazi jacket upon his release as a sort of "final insult." I agree, it all sounds pretty unlikely, but that's the story so far. I'd never heard of such a situation, and wanted to see if anyone had ever heard of such an incident taking place.
What makes it all stranger is that the insignia on the tunic show it to be that of a sergeant in Field Artillery Regiment 9, with ribbons denoting Iron Cross 2nd class and Winter campaign in the east 1941-42. Again, how would this tunic have found its way to Japan?