List of territories acquired by the Empire of Japan

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Members of the Greater East Asia Co-Prosperity Sphere; territory controlled at maximum height. Japan and its allies in dark red; Thailand and Free India. Occupied territories/client states in lighter red. Korea, Taiwan, and Karafuto (South Sakhalin) were integral parts of Japan. Greater Asian Co-prosperity sphere.png
Members of the Greater East Asia Co-Prosperity Sphere; territory controlled at maximum height. Japan and its allies in dark red; Thailand and Free India. Occupied territories/client states in lighter red. Korea, Taiwan, and Karafuto (South Sakhalin) were integral parts of Japan.
Maximum extent of the Japanese empire Japanese Empire2.png
Maximum extent of the Japanese empire

This is a list of regions occupied or annexed by the Empire of Japan until 1945, the year of the end of World War II in Asia, after the surrender of Japan. Control over all territories except most of the Japanese mainland (Hokkaido, Honshu, Kyushu, Shikoku, and some 6,000 small surrounding islands) was renounced by Japan in the unconditional surrender after World War II and the Treaty of San Francisco. A number of territories occupied by the United States after 1945 were returned to Japan, but there are still a number of disputed territories between Japan and Russia (the Kuril Islands dispute), South Korea and North Korea (the Liancourt Rocks dispute), the People's Republic of China and Taiwan (the Senkaku Islands dispute).

Contents

Pre-WWI

Colonies

Occupied territories

WWI

Colonies

Occupied territories

Siberian intervention

Occupied territories

World War II

TerritoryJapanese nameDatePopulation est. (1944)Notes
South Sakhalin Karafuto Prefecture (樺太庁)1905–1943406,000Elevated to naichi status in 1943.
Mainland China Chūgoku tairiku (中国大陸)1931–1945200,000,000 (est.) Manchukuo 50 million (1940), Rehe, Kwantung Leased Territory, Jiangsu, Shanghai, Shandong, Hebei, Beijing, Tianjin, plus parts of : Guangdong, Guangxi, Hubei, Hunan, Fujian, Guizhou, Inner Mongolia
Japan proper naichi (内地)1868–194576,200,000Present day Japan, South Sakhalin (after 1943), and Kuril Islands
Korea Chōsen (朝鮮)1910–194525,500,000
Taiwan Taiwan (臺灣)1895–19456,586,000
Hong Kong Hon Kon (香港)December 25, 1941 – August 30, 19451,400,000 Hong Kong (UK)
:: East Asia (subtotal)Higashi Ajia (東アジア)310,092,000
Vietnam Annan (安南)September 1940 – August 194522,122,000As French Indochina (FR)
Cambodia Kanbojia (カンボジア)July 1941 - August 19453,100,000As French Indochina, Japanese occupation of Cambodia
Laos Raosu (ラオス)1,400,000As French Indochina, Japanese occupation of Laos
Thailand Tai (タイ)December 8, 1941 – August 15, 194516,216,000Independent state but allied with Japan
Malaysia Maraya (マラヤ), Kita Boruneo (北ボルネオ), Marai (マライ)December 8, 1941 – September 12, 1945 (Malaya), December 16, 1941 – September 11, 1945 (Sarawak, Brunei, Labuan, North Borneo)4,938,000 plus 39,000 (Brunei)As Malaya (UK), British Borneo (UK), Brunei (UK)
Philippines Firipin (フィリピン)May 8, 1942 – September 2, 194517,419,000 Philippines (US)
Dutch East Indies Higashi Indo (東印度), Sumatora Nishikaigan (スマトラ西海岸)1942 – 194572,146,000 Dutch East Indies (NL), West Coast Sumatra (NL)
Singapore Syōnan-tō (昭南島) February 15, 1942 – September 12, 1945795,000 Singapore (UK)
Burma (Myanmar) Biruma (ビルマ)May 28, 1942–September 13, 194516,800,000 Burma (UK)
East Timor Higashi Chimōru (東チモール)February 19, 1942 – September 11, 1945450,000 Portuguese Timor (PT)
:: Southeast Asia (subtotal)Tōnan Ajia (東南アジア)155,452,000
Manipur [2] [3] Manipurū (マニプール)October 21, 1943 – August 18, 1945525,000 [4] Azad Hind [5] [6] [7] (also independent but Japanese-allied)
:: South Asia (subtotal)Minami ajia (南亞細亞)-525,000
New Guinea Nyū Ginia (ニューギニア)1941 - 19451,400,000As Papua and New Guinea (AU)
Guam Ōmiya-tō (大宮島)December 10, 1941 – August 10, 1944from Guam (US)
South Seas Mandate Nan'yō Guntō (南洋群島)1919–1945129,000from German Empire
Nauru Nauru (ナウル)August 26, 1942 – September 13, 19453,000 Occupied from the United Kingdom, Australia, and New Zealand
Wake Island, USŌtori-shima, -jima (大鳥島)December 23, 1941 – September 4, 1945nilUS
Kiribati Kiribasu (キリバス)December 1941 – 194528,000from Gilbert Islands (UK)
:: Pacific Islands (subtotal)1,433,000
:: Total Population466,069,000

Disclaimer: Not all areas were considered part of Imperial Japan but rather part of puppet states & sphere of influence, allies, included separately for demographic purposes. Sources: POPULSTAT Asia [8] Oceania [9]

Other occupied islands during World War II:

Areas attacked but not conquered

Raided without immediate intent of occupation

See also

References

  1. Leonard A. Humphreys (1995). 'The Way of the Heavenly Sword: The Japanese Army in the 1920s. Stanford University Press. p. 26.
  2. Meetei Kangjam, Y. (2019). Forgotten Voices of the Japan Laan: The Battle of Imphal and the Second World War in Manipur. India: INTACH.
  3. Chongtham, Samarendra (2008). The Land of The Rising Sun: Numitna Thorakpham Japan Urubada. ISBN 978-81-8370-147-1.
  4. "A-02: Decadal variation in population 1901-2011, Manipur" (PDF). censusindia.gov.in. Retrieved 22 July 2023.
  5. Cribb, R.; Li, N. (2020). Imperial Japan and National Identities in Asia, 1895–1945. Taylor & Francis. p. 242. ISBN   978-1-000-14401-7. Japanese postal authorities prepared stamps for use in the foreshadowed puppet state of Azad Hind
  6. Dunphy, J. J. (2018). Unsung Heroes of the Dachau Trials: The Investigative Work of the U.S. Army 7708 War Crimes Group, 1945–1947. McFarland, Incorporated, Publishers. p. 116. ISBN   978-1-4766-3337-4. Imperial Japan in 1943 had established a puppet state known as the Provisional Government of Free India
  7. Toye, Hugh (1959). The Springing Tiger: A Study of the Indian National Army and of Netaji Subhas Chandra Bose. Allied Publishers. p. 187. ISBN   978-8184243925.{{cite book}}: ISBN / Date incompatibility (help)
  8. http://www.populstat.info/Asia/asia.html Archived 2020-02-23 at the Wayback Machine Populstat ASIA
  9. http://www.populstat.info/Oceania/oceania.html Archived 2020-02-25 at the Wayback Machine Populstat OCEANIA