Conflict
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Combatant 1
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Combatant 2
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Results
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Jōmon period
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East Expedition of Emperor Jimmu (c. 7th century BCE)
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Kamu-yamato Iware-biko no mikoto's loyal warriors
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Troops led by local chiefdoms
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Kamu-yamato Iware-biko no mikoto victory
- Kamu-yamato Iware-biko no-mikoto became first Emperor (Emperor Jimmu).
- Mythical foundation of Japan
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Yayoi period
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Civil War of Wa (2nd century CE)
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Unknown Yayoi chiefdoms
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Unknown Yayoi chiefdoms
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Establishment of Yamatai state
- Consolidation of chiefdoms
- Himiko made queen
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Yamato period
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Goguryeo–Wa conflicts (391–404)
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Wa Baekje Gaya
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Goguryeo Silla
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Defeat
- The Wa troops withdrew from the capital of Silla, but Ara Gaya captured the capital of Silla again.
- The Wa troops lost the battle against Goguryeo in Pyongyang (Gwanggaeto Stele).
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Mishihase War (658–660)
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Yamato State Emishi
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Mishihase
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Victory
- Mishihase were possible recent settlers from Siberia.
- Yamato and Emishi force defeated Mishihase. (Nihon Shoki)
- Place uncertain, possibly Hokkaido
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Baekje-Tang War (660–663)
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Yamato (Wa) Baekje Goguryeo
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Tang Silla
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Defeat
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Jinshin War (672)
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Prince Ōama
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Prince Ōtomo
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Prince Ōama victory
- Death of Prince Ōtomo
- Emperor Tenmu (Prince Ōama) acceded to the throne.
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Nara period
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Thirty-Eight Years' War (770–811)
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Imperial Court
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Emishi
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Imperial victory
- Sakanoue no Tamuramaro became shōgun.
- Death of Aterui. Most of Emishi entered under the rule of Imperial Court.
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Heian period
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Former Nine Years' War (1051–1063)
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Imperial Court
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Abe clan
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Imperial victory
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Later Three-Year War (c. 1083–1089)
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Minamoto clan Northern Fujiwara clan
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Kiyohara clan
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Minamoto and Fujiwara victory
- The Northern Fujiwara clan ruled the former territory of the Kiyohara clan.
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Genpei War (1180–1185)
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Minamoto clan
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Taira clan
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Minamoto victory
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Kamakura period
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Jōkyū War (1221)
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Kamakura shogunate
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Retired Emperor Go-Toba's loyal warriors
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Kamakura victory
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Mongol invasions of Japan (1274 and 1281)
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Japan
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Mongol Empire
- China
Korea
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Victory
- Japan defeats the Mongol invasions.
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Genkō War (1331–1333)
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Emperor Go-Daigo's loyal forces
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Kamakura shogunate
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Imperial victory
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Muromachi period
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Ōei Invasion (1419)
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Ashikaga shogunate
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Korea
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Victory[1]
- Withdrawal of Korean armies from Tsushima island
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Ōnin War (1467–1477)
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Hosokawa clan
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Ashikaga shogunate
Yamana clan
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Stalemate
- Weakening of the Ashikaga shogunate
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Azuchi–Momoyama period
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Bunroku-Keicho War/Imjin War (1592–1598)
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Japan
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Korea China
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Defeat
- Withdrawal of Japanese armies from Korean peninsula following military stalemate
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Edo period
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Invasion of Ryukyu (1609)
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Satsuma Domain
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Ryūkyū Kingdom
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Satsuma victory
- The Ryukyu Kingdom becomes a vassal state.
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Shimabara Rebellion (1637–1638)
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Tokugawa shogunate
Dutch Empire
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Roman Catholics and rōnin rebels
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Tokugawa victory
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Bombardment of Kagoshima (1863)
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Satsuma Domain
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British Empire
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Stalemate
- Tactical stalemate and mitigated British victory
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Shimonoseki Campaign (1863–1864)
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Chōshū Domain
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British Empire
Dutch Empire
France
United States
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Defeat
- Chōshū pays an indemnity of $3,000,000.
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Summer War (1866)
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Chōshū Domain
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Tokugawa shogunate
Aizu Domain
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Chōshū victory
- Weakening of the Tokugawa shogunate
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Meiji period
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Boshin War (1868–1869)
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Imperial Court
Tozama:
Other Tozama daimyō:
Japan
United States
United Kingdom
|
Tokugawa shogunate
Aizu Domain
Ōuetsu Reppan Dōmei
- and others...
Takamatsu Domain
Tsuruoka Domain
Kuwana Domain
Matsuyama Domain
Ogaki Domain
Republic of Ezo
France
|
Imperial victory
- End of the Tokugawa shogunate
- Meiji Restoration
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Japanese invasion of Taiwan (1874) (1874)
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Japan
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Paiwan
China
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Victory
- Occupation of Taiwan by Japan
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Battle of Ganghwa (1875)
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Japan
|
Korea
|
Victory
- Severe damage inflicted on Korean defenses
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Southwestern War (1877)
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Japan
|
Shizoku clans from Satsuma Domain
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Imperial victory
- Shizoku rebellions were suppressed.
- The conscription system was established in Japan.
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First Sino-Japanese War (1894–1895)
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Japan
|
China
|
Victory
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Japanese invasion of Taiwan (1895)
|
Japan
|
Formosa
|
Victory
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Boxer Rebellion (1899–1901)
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Japan
Russia
United Kingdom
France
United States
Germany
Austria-Hungary
Italy
|
Boxers
China
|
Victory
- The rebellion was suppressed.
- Signing of the Boxer Protocol
- Provisions for foreign troops to be stationed in Beijing
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Russo-Japanese War (1904–1905)
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Japan
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Russia
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Victory
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Battle of Namdaemun (1907)
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Japan
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Korea
|
Victory
- Imperial Korean Armed Forces was disbanded.
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Beipu uprising (1907)
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Japan
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Hakka Saisiyat
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Victory
- Marked a new phase in armed Taiwanese resistance.
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Taishō period
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Truku War (1914)
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Japan
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Truku Tribe
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Victory
- Truku Tribe were scattered into many different locations.
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Tapani incident (1915)
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Japan
|
Tai Republic Han Taiwanese Taiwanese aborigines
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Victory
- The colonial government subsequently took steps to improve colonial administration in southern Taiwan.
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World War I (1914–1918)
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Japan
France
United Kingdom
Russia
Italy
United States
Serbia
Montenegro
Belgium
Romania
Portugal
Hejaz
China
Greece
Brazil
|
Germany
Austria-Hungary
Ottoman Empire
Bulgaria
|
Victory
- End of the German Empire, Austro-Hungarian Empire, Ottoman Empire, and Russian Empire
- Formation of new countries in Europe and the Middle East
- Transfer of German colonies and regions of the former Ottoman Empire to other powers
- Creation of the League of Nations
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Siberian Intervention (1918–1922)
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Japan
White movement
United States
United Kingdom
France
Italy
Poland
China
Czechoslovakia
Mongolia
|
Russia
Far Eastern Republic
Mongolian People's Party
|
Defeat
- Bolsheviks regain Siberia.
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Shōwa period
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Jinan incident (1928)
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Japan
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Kuomintang government
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Victory
- Occupation of Jinan by Japanese Army
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Musha Incident (1930)
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Japan Toda Truku (Taroko)
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Tkdaya
|
Victory
- Seediq land was given to the Truku (Taroko) and Toda by the Japanese after the incident.
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Japanese invasion of Manchuria (1931–1932)
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Japan
|
China
|
Victory
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January 28 incident (1932)
|
Japan
|
China
|
stalemate
- China and Japan signed the Shanghai Ceasefire Agreement
- Shanghai demilitarized
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Soviet–Japanese border conflicts (1932–1939)
|
Japan
|
Soviet Union
Mongolia
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Defeat
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Second Sino-Japanese War (1937–1945)
|
Japan
Reorganized National Government
Manchukuo
Mengjiang
Provisional Government
Reformed Government
East Hebei
|
China
United States
Soviet Union
British Empire
|
Defeat
- Merged into World War II
- Chinese victory as part of the Allied victory in the Pacific War
- Surrender of all Japanese forces in mainland China (excluding Manchuria), Formosa and French Indochina north of 16° north to China
- China becomes a permanent member of the United Nations Security Council.
- Resumption of the Chinese Civil War
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Invasion of French Indochina (1940)
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Japan
|
Vichy France
French Indochina
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Victory
- Japanese occupation of Northern French Indochina
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World War II (1941–1945)
|
Japan
Germany
Italy
Romania
Hungary
Bulgaria
Slovakia
Croatia
Finland
Thailand
Iraq
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United States
Soviet Union
United Kingdom
China
France
Poland
Yugoslavia
Greece
Netherlands
Belgium
Luxembourg
Denmark
Norway
Czechoslovakia
India
Canada
Australia
New Zealand
South Africa
Philippines
Ethiopia
Brazil
Mexico
Mongolia
Tuva
|
Defeat
- Fall of the Empire of Japan, Greater German Realm, and Kingdom of Italy
- Allied occupation of Japan and Germany
- Continuation of the Chinese Civil War
- Substantial weakening of European colonial powers, gradual decolonization of Asia (including the Indonesian National Revolution and the First Indochina War)
- Creation of the United Nations
- Emergence of the United States and the Soviet Union as superpowers
- Beginning of the Cold War
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Indonesian National Revolution (1945–1949)
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Japan (volunteers)
Indonesia
India (defectors)
|
Japan (until 1946)
Netherlands
United Kingdom
Australia
|
Indonesian Victory
- Netherlands accepts the Independence of Indonesia
- Restoration of the reputation of the remnants of the Japanese army
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Operation Masterdom (1945–1946)
|
Japan
United Kingdom
France
|
Viet Minh
|
Victory
- Restoration of French rule in Indochina
- Start of the First Indochina War, lasting until the Geneva Conference of 1954
|
Heisei period
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Battle of Amami-Ōshima (2001)
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Japan
|
North Korea
|
Victory
- North Korean naval trawler sunk
|
Iraq War (2003–2011)
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-
Japan
-
South Korea
-
Spain
-
Denmark
-
Romania
-
El Salvador
-
Estonia
-
Bulgaria
-
Moldova
-
Albania
-
Ukraine
-
Czech Republic
-
Tonga
-
Azerbaijan
-
Singapore
-
Bosnia and Herzegovina
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Macedonia
-
Latvia
-
Kazakhstan
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Armenia
-
Mongolia
-
Georgia
-
Slovakia
-
Lithuania
-
Italy
-
Norway
-
Hungary
-
Netherlands
-
Portugal
-
New Zealand
-
Thailand
-
Philippines
-
Honduras
-
Dominican Republic
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Nicaragua
-
Iceland
United States
United Kingdom
Australia
Poland
Peshmerga
New Iraqi government
|
-
Islamic State of Iraq
-
Islamic Army of Iraq
- Ansar al-Sunnah
Iraq
|
Victory
|
Operation Ocean Shield (2009–2016)
|
Japan
Somalia
NATO
Australia
China
Colombia
India
Indonesia
Malaysia
New Zealand
Oman
Pakistan
Puntland
Russia
Saudi Arabia
Seychelles
Singapore
South Korea
Ukraine
|
Somali pirates
|
Victory
- Number of Somali pirate attacks have been reduced dramatically.
|