This article is about the Pacific theaters of World War II. For other uses, see Pacific War (disambiguation).
"War in the Pacific" redirects here. For the war between Chile, Bolivia, and Peru in 1879–1884, see War of the Pacific.
"Pacific theater of World War II" redirects here. For the US military area of operations, see Pacific Ocean Areas. For other uses, see Pacific theater (disambiguation).
Pacific War
Part of World War II
Clockwise from top left:
US marines raising a flag over Iwo Jima, 1945
Japanese naval aircraft prepare for takeoff to attack Pearl Harbor, 1941
USS Bunker Hill after being struck by kamikazes, 1945
Indian soldiers during the Burma campaign, 1945
Japanese soldiers in China during Operation Ichi-Go, 1944
Mushroom cloud after the US atomic bombing of Nagasaki, 1945
Date
7 December 1941 – 2 September 1945 (3 years, 8 months, 3 weeks and 5 days)[b][2]
Location
East Asia
South Asia
Southeast Asia
Oceania
Pacific Ocean
Indian Ocean
Result
Allied victory
Territorial changes
Allied occupation of Japan
Removal of Japanese troops from China and retrocession of Taiwan to China
Liberation of Korea and Manchuria, followed by the division of Korea
Cession of Japanese-held islands in the Central Pacific Ocean to the United Nations, organized as the Trust Territory of the Pacific Islands
Seizure and annexation of South Sakhalin and the Kuril Islands by the Soviet Union
Belligerents
Main Allies:
China[a]
United States
United Kingdom
See section Participants for further details.
Main Axis:
Japan
See section Participants for further details.
Commanders and leaders
Main Allied leaders
Chiang Kai-shek
Franklin D. Roosevelt[c]
Winston Churchill[d]
Main Axis leaders
Hirohito
Hideki Tojo[e]
Strength
14,000,000[3]
3,621,383+ (1945)[nb 1]
400,000[8] 2,000,000[8]
140,000[9][nb 2]
1,747,465 (1945)[10]
7,800,000–7,900,000 (1945)[11][12][13]
126,500[14]
, , and other puppets: c. 1,000,000+ (1945)[15]
Casualties and losses
Military
12 aircraft carriers
4 battleships
25 cruisers
84 destroyers and destroyer escorts
63 submarines[16]
21,555[17]–27,000+ aircraft[18]
4,000,000+ dead (1937–1945)[nb 3]
Civilian deaths 26,000,000+ (1937–1945)[nb 4]
Military
25 aircraft carriers
11 battleships
39 cruisers
135 destroyers
131 submarines[34]
43,125[17]-50,000+ aircraft[35]
2,500,000+ dead (1937–1945)[nb 5]
Civilian deaths
1,000,000+[nb 6]
v
t
e
Pacific War
Central Pacific
Pearl Harbor
Marshalls–Gilberts raids
K
Doolittle Raid
Midway
Gilberts and Marshalls
Marianas and Palau
Volcano and Ryukyu
Truk
Ocean Island
Indian Ocean (1941–1945)
Japanese merchant raids
Andaman Islands
Homfreyganj massacre
Christmas Island
1st Indian Ocean
Ceylon
Bay of Bengal
2nd Indian Ocean
Southeast Asia
Indochina (1940)
Franco-Thai War
Thailand
Malaya
Hong Kong
Singapore
Indochina (1945)
Malacca Strait
Jurist
Tiderace
Zipper
Strategic bombing (1944–45)
Burma and India
Burma (1941–42)
Burma (1942–43)
Burma and India (1944)
Burma (1944–45)
Southwest Pacific
Dutch East Indies (1941–42)
Philippines (1941–42)
RY
Solomon Islands
Coral Sea
Timor
Australia
New Guinea
New Britain
Philippines (1944–45)
Borneo (1945)
North America
Ellwood
Aleutian Islands
Estevan Point Lighthouse
Fort Stevens
Lookout Air Raids
Fire balloon bombs
Project Hula
PX
Japan
Air raids
Tokyo
Yokosuka
Kure
Hiroshima and Nagasaki
Mariana Islands
Volcano and Ryukyu Islands
Starvation
Naval bombardments
Sagami Bay
South Sakhalin
Kuril Islands
Shumshu
Downfall
Japanese surrender
Manchuria and Northern Korea
Kantokuen
Manchuria (1945)
Mutanchiang
Chongjin
Second Sino-Japanese War
v
t
e
Military campaigns of the Empire of Japan
Meiji period
Taiwan (1874)
Ganghwa (1875)
Ryukyu (1879)
Manchuria, Korea, and Taiwan (1894–1895)
Liaodong Peninsula (1895)
China (1899–1901)
Manchuria and Korea (1904–1905)
Korea (1910)
Taishō period
Tsingtao (1914)
Siberia (1918–1922)
Shōwa period
Manchuria and Inner Mongolia (1931–1936)
China (1937–45)
French Indochina (1940)
Asia-Pacific (1941–1945)
v
t
e
Campaigns of World War II
Europe
Poland
Phoney War
Finland
Winter War
Karelia
Lapland
Denmark and Norway
Western Front
1940
1944–1945
Britain
Balkans
Eastern Front
Italy
Sicily
Asia-Pacific
China
Pacific Ocean
South West Pacific
Franco-Thai War
South-East Asia
Burma and India
Japan
Manchuria and Northern Korea
pre-war border conflicts
Mediterranean and Middle East
Africa
North Africa
East Africa
Mediterranean Sea
Adriatic
Malta
Middle East
Iraq
Syria–Lebanon
Iran
Southern France
Other campaigns
Americas
Atlantic
Arctic
Strategic bombing
French West Africa
Indian Ocean
Madagascar
Coups
Yugoslavia
Iraq
Italy
Romania
Bulgaria
Hungary
French Indochina
The Pacific War, sometimes called the Asia–Pacific War or the Pacific Theater,[43] was the theater of World War II that was fought in eastern Asia, the Pacific Ocean, the Indian Ocean, and Oceania. It was geographically the largest theater of the war, including the vast Pacific Ocean theater, the South West Pacific theater, the Second Sino-Japanese War, and the Soviet–Japanese War.
The Second Sino-Japanese War between the Empire of Japan and the Republic of China had been in progress since 7 July 1937, with hostilities dating back to 1931 with the Japanese invasion of Manchuria.[44] However, it is more widely accepted[f] that the Pacific War itself began on 7 December (8 December Japanese time) 1941, when the Japanese simultaneously attacked American military bases in Hawaii, Wake Island, Guam, and the Philippines and invaded Thailand and the British colonies of Malaya, Singapore, and Hong Kong.[45][46][47]
The Pacific War saw the Allies pitted against Japan, the latter aided by Thailand and to a lesser extent by the Axis powers, Germany and Italy. The Japanese achieved great success in the initial phase of the campaign, but were gradually driven back using an island hopping strategy. The Allies adopted a Europe first stance, giving first priority to defeating Nazi Germany, but still managed to bring to bear the vast industrial might of the United States. The Japanese had great difficulty replacing their losses in ships and aircraft, while American factories and shipyards produced ever increasing numbers of both. Fighting included some of the largest naval battles in history and massive Allied air raids over Japan, as well as the atomic bombings of Hiroshima and Nagasaki.
Japan surrendered unconditionally on 15 August 1945 and was occupied by the Allies. Japan lost its former possessions in Asia and the Pacific and had its sovereignty limited to the four main home islands and other minor islands as determined by the Allies.[48]
^ abcCh'i 1992, p. 157.
^ abSun 1996, p. 11.
^Hastings 2008, p. 205.
^Coakley & Leighton 1989, p. 836.
^US Navy Personnel in World War II Service and Casualty Statistics, Naval History and Heritage Command, Table 9.
^King, Ernest J. (1945). Third Report to the Secretary of the Navy p. 221
^"US Navy Personnel in World War II Service and Casualty Statistics", Naval History and Heritage Command, Footnote 2.
^ abHastings 2008, p. 10.
^"Chapter 10: Loss of the Netherlands East Indies". The Army Air Forces in World War II. HyperWar. Retrieved 31 August 2010.
^Cherevko 2003, Ch. 7, Table 7.
^Cook & Cook 1993, p. 403.
^Harrison p. 29 Retrieved 10 March 2016
^Australia-Japan Research Project, "Dispositions and Deaths" Retrieved 10 March 2016
^Meyer 1997, p. 309.
^Jowett 2005, p. 72.
^"Losses", Nav source. Retrieved 25 July 2015. Allies' warships, Uboat. Retrieved 25 July 2015; "Major British Warship Losses in World War II". Retrieved 25 July 2015; Chinese Navy Retrieved 26 July 2015.
^ abHara 2011, p. 299.
^USSBS Summary Report, p. 68. Retrieved 26 May 2023. US aircraft losses only. Includes 8,700 in combat and the rest operational.
^ ab"Chinese People Contribute to WWII". Retrieved 23 April 2009.
^ abcClodfelter 2017, pp. 527.
^Dower 1986, p. 364. sfn error: no target: CITEREFDower1986 (help)
^Dear, I. C. B.; Foot, M. R. D., eds. (2005). "Australia". The Oxford Companion to World War II. Oxford: Oxford University Press. p. 66. ISBN 978-0-19-280670-3.
^Gruhl 2007, p. 65.
^"Honouring NZ's Pacific War dead". Beehive. 15 August 2005. Archived from the original on 25 May 2012. Retrieved 31 October 2010.
^"Russia and USSR in Wars of the 20th Century". И. И. Ивлев. Archived from the original on 5 May 2008. Retrieved 11 July 2008.
^"Leyte Gulf: The Mexican Air Force". Avalanche Press. Retrieved 1 December 2015.
^MacLeod 1999, p. 51.
^ abDower 1993.
^"Vietnam needs to remember famine of 1945". Anu. Archived from the original on 19 October 2017. Retrieved 31 October 2010.
^Sen 1999, p. 203.
^Gruhl 2007, pp. 143–144.
^McLynn 2010, p. 1.
^Ruas, Óscar Vasconcelos, "Relatório 1946–47", AHU
^Hara 2011, p. 297.
^USSBS Summary Report, p. 67. Retrieved 5/26/23. Approximately 20,000 in combat and 30,000 operational.
^Bren, John (3 June 2005) "Yasukuni Shrine: Ritual and Memory" Japan Focus. Retrieved on 5 June 2009.
^Rummel 1991, Table 5A.
^Murashima 2006, p. 1057n.
^Clodfelter 2002, p. 556.
^Statistics of democide: Chapter 13: Death By American Bombing, RJ Rummel, University of Hawaii.
^Gruhl 2007, p. 19.
^E. Bruce Reynolds, "Aftermath of Alliance: The Wartime Legacy in Thai-Japanese Relations", Journal of Southeast Asian Studies, v21, n1, March 1990, pp. 66–87. "An OSS document (XL 30948, RG 226, USNA) quotes Thai Ministry of Interior figures of 8,711 air raids deaths in 1944–45 and damage to more than 10,000 buildings, most of them totally destroyed. However, an account by M. R. Seni Pramoj (a typescript entitled 'The Negotiations Leading to the Cessation of a State of War with Great Britain' and filed under Papers on World War II, at the Thailand Information Center, Chulalongkorn University, p. 12) indicates that only about 2,000 Thai died in air raids."
^Murray & Millett 2001, p. 143.
^MacLeod 1999, p. 1.
^Drea 1998, p. 26.
^Costello 1982, p. 129–148.
^Japan Economic Foundation, Journal of Japanese Trade & Industry, Volume 16, 1997
^Takemae 2003, p. 516.
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