 Japanese troops took control of government infrastructure and services such as ports and postal services.In addition to the 100,000 European (and some Chinese) civilians interned, 80,000 Dutch, British, Australian, and US Allied troops went to prisoner-of-war camps where the death rates were between 13 and 30 percent.The Indonesian ruling class (composed of local officials and politicians who had formerly worked for the Dutch colonial government) co-operated with the Japanese military authorities, who in turn helped to keep the local political elites in power and employ them to supply newly arrived Japanese industrial concerns and businesses and the armed forces (chiefly auxiliary military and police units run by the Japanese military in the Dutch East Indies).