Section 13: Impact of the Second World War on South-East Asia

The question asks which territory had a dual administration during the Japanese occupation — meaning both the colonial power and Japan governed simultaneously, rather than Japan displacing the colonial authority outright.

Following France's defeat by Germany in 1940, the Vichy French collaborationist regime agreed to allow Japanese forces into Indochina while retaining French civil administration. This arrangement lasted from 1940 until March 1945, when Japan staged a coup and removed French administrators entirely.

In the Dutch East Indies, Malaya, and Burma, Japan removed existing colonial administrations rather than governing alongside them. Dutch officials were interned, British forces were expelled, and Japanese military rule replaced colonial structures directly.

Only French Indochina experienced genuine dual administration — Vichy French officials running courts, taxation, and local bureaucracy while Japan controlled military and strategic resources. This is what made Indochina's occupation structurally distinct from every other South-East Asian territory.

The question seeks the one territory where the existing colonial administration continued to function alongside Japanese occupation, rather than being immediately dismantled.

'British Burma, where Aung San's nationalist forces served as intermediaries between Japanese command and the British civil service' is incorrect. Japan expelled British colonial authority from Burma; there was no continuing British administrative presence. Aung San's forces fought alongside Japan, not as a bridge between two co-existing administrations.

'Dutch East Indies, where the Netherlands retained partial administrative jurisdiction over Java and Sumatra under Japanese supervision' is incorrect. Dutch colonial officials were interned and Dutch institutions were actively dismantled after Japan's conquest in early 1942 — the opposite of co-administration.

'British Malaya, where the sultans of the protected Malay states were allowed to maintain parallel administrative functions alongside Japanese rule' is incorrect. While local sultans were sometimes retained symbolically, the British colonial administration was removed, not preserved in a formal dual-power arrangement equivalent to Vichy France in Indochina.

French Indochina is the only territory matching the description. The Vichy French administration ran civil affairs alongside Japanese military occupation from 1940 to March 1945, making it the sole example of formal dual administration in occupied South-East Asia.