Wars involving Japan

World War II, or the Second World War, was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated. Tanks and aircraft played major roles, the latter enabling the strategic bombing of cities and delivery of the only nuclear weapons used in war. World War II was the deadliest conflict in history, causing the death of 60 to 75 million people. Millions died as a result of massacres, starvation, disease, and genocides, including the Holocaust. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. Major areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. The war saw important developments in weaponry including tanks, aircraft, artillery, machine guns, and chemical weapons. One of the deadliest conflicts in history, it resulted in an estimated 15 to 22 million military and civilian casualties and genocide. The movement of large numbers of people was a major factor in the deadly Spanish flu pandemic.

The Iraq War, also referred to as the Second Gulf War, was a protracted armed conflict in Iraq from 2003 to 2011. It began with the invasion by a United States–led coalition, which resulted in the overthrow of the Ba'athist government of Saddam Hussein. During the US occupation of Iraq, the conflict persisted as an insurgency that arose against coalition forces and the newly established Iraqi government. US forces were officially withdrawn in 2011. In 2014, the US became re-engaged in Iraq, leading a new coalition under Combined Joint Task Force – Operation Inherent Resolve, as the conflict evolved into the ongoing Islamic State insurgency.

conflict between the Russian and Japanese empires from 1904 to 1905

Japanese invasion of China (1937–1945)

anti-imperialist uprising which took place in China 1899-1901

1894–1895 war between the Qing dynasty and the Empire of Japan over influence in Joseon, fought chiefly in Joseon

civil war in Japan, fought from 1868 to 1869

attempts by the Mongol Empire to conquer Japan

armed conflict and diplomatic struggle between Indonesia and the Dutch Empire

invasion of the Japanese puppet state of Manchukuo by the Soviet Union near the end of WWII

conflict during late-Heian period of Japan

armed conflict in the 1930s between the Soviets, Mongolians, and Japanese

punitive expedition to Formosa (Taiwan), first foreign military campaign after the Meiji Ishin (Meiji Restoration)

period of Japanese history from 1914 to 1918

672 succession war in Japan

Japanese civil war (1221) between Retired Emperor Go-Toba and the Hōjō clan, regents of the Kamakura shogunate

1895 invasion of Taiwan by Imperial Japan

involvement of Japan in World War II

1945-1946 armed conflict involving a largely British-Indian and French task force and Japanese troops from the Southern Expeditionary Army Group, versus the Vietnamese communist movement, the Viet Minh

killing of 54 Ryūkyūan sailors in Qing-era Taiwan who wandered into Taiwan after shipwreck, causing the Taiwan Expedition of 1874 by Japan

fought in the 1080s in Mutsu Province on the Japanese island of Honshū

1019 invasion of northern Kyūshū by Jurchen pirates

1457 war between the Ainu and Wajin in Japan

1866 Tokugawa shogunate defeat in Japan

1350–52 Ashikaga civil war in Japan

1419 Joseon invasion of Tsushima

4th to 5th century war in Korea

involvement of Mongolia in World War II

1864 Japanese military campaign

1616 failed invasion of Taiwan

1189 battle in Tōhoku, Japan

Wikimedia list article

Series of conflicts in 15th century Japan