A registration card for Louis Wijnhamer (1904–1975), an ethnic Dutch humanitarian who was captured soon after the Empire of Japan occupied the Dutch East Indies in March 1942. Prior to the occupation, many ethnic Europeans had refused to leave, expecting the Japanese occupation government to keep a Dutch administration in place. When Japanese troops took control of government infrastructure and services such as ports and postal services, 100,000 European (and some Chinese) civilians were interned in prisoner-of-war camps where the death rates were between 13 and 30 per cent. Wijnhamer was interned in a series of camps throughout Southeast Asia and, after the surrender of Japan, returned to what was now Indonesia, where he lived until his death.Document: Japanese occupation government; scan by the National Archives of the Netherlands