Japanese military administration (Malai Gunsei) over the Malay peninsula and Singapore (renamed Syonan-to) after the fall of Singapore on 15 February 1942.
Ended with Japan's surrender; the British Military Administration took over in September 1945 (Singapore surrender ceremony 12 September 1945).
The atlas holds 2 border frames for Japanese-occupied Malaya — the shape you scrub through changes in 1942 · 1943.
The standard scholarly history of occupied Malaya, including the 1943 transfer of the four northern states to Thailand.