"...(The Japanese prince) traveled all over occupied China and Southeast Asia supervising the collection of plunder, using hospital ships to carry much of it to manila for onward shipment to Japan.
From early 1943 til mid-1945, he was in the Philippines overseeing the hiding of this loot in bunkers, in vaults beneath old Spanish churches and in vast underground tunnel complexes."
- excerpts from http://spitfirelist.com