From December 1941, Japan, as part of its plan to build an East Asian empire and secure oil supplies essential for war in the Pacific, swiftly took control of Southeast Asia. Japanese occupation had a devastating economic impact on the region. Japan imposed country and later regional autarky on Southeast Asia, dictated that the region finance its own occupation, and sent almost no consumer goods. GDP fell by half everywhere in Southeast Asia except Thailand. Famine and forced labour accounted for most of the 4.4 million Southeast Asian civilian deaths under Japanese occupation. In this ground-breaking new study, Gregg Huff provides the first comprehensive account of the economies and societies of Southeast Asia during the 1941-1945 Japanese occupation. Drawing on materials from 25 archives over three continents, his economic, social and historical analysis presents a new understanding of Southeast Asian history and development before, during and after the Pacific War.