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Japanese invasion of Manchuria

The Empire of Japan's Kwantung Army invaded the Manchuria region of the Republic of China on 18 September 1931, immediately following the Mukden Incident.[2] At the war's end in February 1932, the Japanese established the puppet state of Manchukuo. Their occupation lasted until the success of the Soviet Union and Mongolia with the Manchurian Strategic Offensive Operation in mid-August 1945, towards the end of the Second World War.

This article is about the 1931 invasion. For the 1894 invasion, see Japanese invasion of Manchuria (1894).

Japanese invasion of Manchuria

九一八事變

九一八事变

瀋陽事變

沈阳事变

滿洲事變

まんしゅうじへん

Manshū Jihen

Manshū Jihen

The South Manchuria Railway Zone and the Korean Peninsula had been under the control of the Japanese Empire since the Russo-Japanese War of 1904–1905. Japan's ongoing industrialization and militarization ensured their growing dependence on oil and metal imports from the US.[3] The US sanctions which prevented trade with the United States (which had occupied the Philippines around the same time) resulted in Japan furthering its expansion in the territory of China and Southeast Asia.[4] The invasion of Manchuria, or the Marco Polo Bridge Incident of 7 July 1937, are sometimes cited as alternative starting dates for World War II, in contrast with the more commonly accepted date of September 1, 1939.[5]


With the invasion having attracted great international attention, the League of Nations produced the Lytton Commission (headed by British politician Victor Bulwer-Lytton) to evaluate the situation, with the organization delivering its findings in October 1932. Its findings and recommendations that the Japanese puppet state of Manchukuo not be recognized and the return of Manchuria to Chinese sovereignty prompted the Japanese government to withdraw from the League entirely.

Initial annexation[edit]

On September 18, 1931, the Japanese Imperial General Headquarters, which had decided upon a policy of localizing the incident, communicated its decision to the Kwantung Army command. However, Kwantung Army commander-in-chief General Shigeru Honjō instead ordered his forces to proceed to expand operations all along the South Manchuria Railway. Under orders from Lieutenant General Jirō Tamon, troops of the 2nd Division moved up the rail line and captured virtually every city along its 1,170-kilometre (730-mile) length in a matter of days.


Likewise on September 19, in response to General Honjō's request, the Joseon army in Korea under General Senjūrō Hayashi ordered the 20th Infantry Division to split its force, forming the 39th Mixed Brigade, which departed on that day for Manchuria without authorization from the Emperor. On September 19, the Japanese occupied Yingkou, Liaoyang, Shenyang, Fushun, Dandong, Siping (Jilin Province), and Changchun. On September 21, the Japanese captured Jilin City. On 23 September, the Japanese took Jiaohe (Jilin Province) and Dunhua. On 1 October, Zhang Haipeng surrendered the Taonan area. Sometime in October, Ji Xing (吉興) surrendered the Yanbian Korean Autonomous Prefecture area[7] and on 17 October, Yu Zhishan surrendered Eastern Liaoning to the Japanese.


Tokyo was shocked by the news of the Army acting without orders from the central government. The Japanese civilian government was thrown into disarray by this act of "gekokujō" insubordination, but as reports of one quick victory after another began to arrive, it felt powerless to oppose the Army, and its decision was to immediately send three more infantry divisions from Japan, beginning with the 14th Mixed Brigade of the IJA 7th Division. During this era, the elected government could be held hostage by the Army and Navy, since Army and Navy members were constitutionally necessary for the formation of cabinets. Without their support, the government would collapse.

Secession movements[edit]

After the Liaoning Provincial government fled Mukden, it was replaced by a "Peoples Preservation Committee" which declared the secession of Liaoning province from the Republic of China. Other secessionist movements were organized in Japanese-occupied Kirin by General Xi Qia head of the Manchukuo Imperial Army, and at Harbin, by General Chang Ching-hui. In early October, at Taonan in northwest Liaoning province, General Zhang Haipeng declared his district independent of China, in return for a shipment of a large number of military supplies by the Japanese Army.


On October 13, Zhang Haipeng ordered three regiments of the Manchukuo Imperial Army under General Xu Jinglong north to take the capital of Heilongjiang province at Qiqihar. Some elements in the city offered to peacefully surrender the old walled town, and Chang advanced cautiously to accept. However his advance guard was attacked by General Dou Lianfang's troops, and in a savage fight with an engineering company defending the north bank, were sent fleeing with heavy losses. During this fight, the Nenjiang railroad bridge was dynamited by troops loyal to General Ma Zhanshan to prevent its use.

Effect on Japanese homefront[edit]

The conquest of Manchuria, a land rich in natural resources, was widely seen as an economic "lifeline" to save Japan from the effects of the Great Depression, generating much public support.[9] The American historian Louise Young described Japan from September 1931 to the spring of 1933 as gripped by "war fever" as the conquest of Manchuria proved to be an extremely popular war.[10] The metaphor of a "lifeline" suggested that Manchuria was crucial to the functioning of the Japanese economy, which explains why the conquest of Manchuria was so popular and why afterwards Japanese public opinion was so hostile towards any suggestion of letting Manchuria go.[11]


At the time, censorship in Japan was nowhere near as stringent as it later became, and Young noted: "Had they wished, it would have been possible in 1931 and 1932 for journalists and editors to express anti-war sentiments".[12] The liberal journal Kaizō criticized the war with the journalist Gotō Shinobu in the November 1931 edition accusing the Kwantung Army of a "two-fold coup d'état" against both the government in Tokyo and against the government of China.[12] Voices like Kaizō were a minority as mainstream newspapers like the Asahi soon discovered that an anti-war editorial position hurt sales, and so switched over to an aggressively militaristic editorial position as the best way to increase sales.[12] Japan's most famous pacifist, the poet Akiko Yosano had caused a sensation in 1904 with her anti-war poem "Brother Do Not Give Your Life", addressed to her younger brother serving in the Imperial Army that called the war with Russia stupid and senseless.[13] Such was the extent of "war fever" in Japan in 1931 that even Akiko succumbed, writing a poem in 1932 praising bushidō, urging the Kwantung Army to "smash the sissified dreams of compromise" and declared that to die for the Emperor in battle was the "purest" act a Japanese man could perform.[13]

External effect[edit]

The Western media reported on the events with accounts of atrocities such as bombing civilians or firing upon shell-shocked survivors.[14] It aroused considerable antipathy to Japan, which lasted until the end of World War II.[14]


When the Lytton Commission issued a report on the invasion, despite its statements that China had to a certain extent provoked Japan, and China's sovereignty over Manchuria was not absolute, Japan took it as an unacceptable rebuke and withdrew from the already declining League of Nations, which also helped create international isolation.[15]


The Manchurian Crisis had a significant negative effect on the moral strength and influence of the League of Nations. As critics had predicted, the League was powerless if a strong nation decided to pursue an aggressive policy against other countries, allowing a country such as Japan to commit blatant aggression without serious consequences. Adolf Hitler and Benito Mussolini were also aware of this, and ultimately both followed Japan's example in aggression against their neighbors: in the case of Italy, against Abyssinia (1935–7); and Germany, against Czechoslovakia (1938–9) and Poland (1939).[16]

(Japanese assassination of the Chinese head of state Generalissimo Zhang Zuolin on 4 June 1928) and the Northeast Flag Replacement (by Zhang Xueliang on 29 December 1928)

Huanggutun incident

Chiang Kai-shek

Military of the Republic of China

National Revolutionary Army

Second Sino-Japanese War

photo collection of Invasion of Manchuria and Shanghai International Settlement During the Shanghai Incident

"On The Eastern Front", April 1932, Popular Science

"MANCHURIA - What This Is All About", February 1932, Popular Mechanics

Solving the "Manchurian Problem": Uchida Yasuya and Japanese Foreign Affairs before the Second World War

Japan's "Sole Road for Survival": The Range of Views Within the Guandong Army over the Seizure of Manchuria and Mongolia"

Japanese Aggression Against China

International Military Tribunal for the Far East

Monograph 144, Manchurian Incident

Mukden Incident & Manchukuo, WW2 database

Photos from the Manchurian campaign

Manchuria 1931-1932

AMS Topographic maps of Manchuria

Japanese Invasion of Manchuria Photograph Collection