Japan during World War I

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Japan participated in World War I (第一次世界大戦, Daiichiji Sekai Taisen^?) from 1914 to 1917, as one of the major Entente Powers, played an important role in securing the sea lanes in South Pacific and Indian Oceans against the Kaiserliche Marine. Politically, Japan seized the opportunity to expand its sphere of influence in China, and to gain recognition as a great power in postwar geopolitics.

Main article: Asian and Pacific theatre of World War I

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Glossary This box: view • talk • edit

1 Events of 1914
2 Events of 1915-1916
3 Events of 1917
4 Events of 1918
5 Events of 1919
6 References

[edit] Events of 1914

On 7 August 1914, the Japanese government received an official request from the British government for assistance in destroying the German raiders of the Kaiserliche Marine in and around Chinese waters. Japan sent Germany an ultimatum on 14 August 1914, which was unanswered, and then Japan formally declared war on the German Empire on 23 August 1914.

Japanese forces quickly occupied German-leased territories in the Far East. On 2 September 1914, Japanese forces landed on China's Shandong Province and surrounded the German settlement at Tsingtao (Kiautschou).

During October, acting virtually independently of the civil government, the Japanese navy seized several of Germany's island colonies in the Pacific, the Mariana, Caroline, and Marshall Islands without resistance.

The Japanese navy conducted the world's first^{[citation needed]} naval-launched air raids against German-held land targets in Shandong province and ships in Qiaozhou Bay from a pre-modern aircraft-carrier, the Wakamiya.

Japanese seaplane carrier Wakamiya.

The Battle of Tsingtao was concluded with the surrender of German colonial forces on 7 November 1914.

[edit] Events of 1915-1916

In February 1915, marines from Imperial Japanese Navy ships based in Singapore helped suppress a mutiny by Indian troops against the British government.

With Japan's European allies heavily involved in the war in Europe, Japan sought further to consolidate its position in China by presenting the Twenty-One Demands to Chinese President Yuan Shikai in January 1915. If achieved, the Twenty-One Demands would have essentially reduced China to a Japanese protectorate, and at the expense of numerous privileges already enjoyed by the European powers in their respective spheres of influence within China. In the face of slow negotiations with the Chinese government, widespread and increasing anti-Japanese sentiments, and international condemnation (particularly from the United States), Japan withdrew the final group of demands, and the treaty was signed by China on 25 May 1915.

Throughout 1915-1916, German efforts to negotiate a separate peace with Japan failed. On 3 July 1916, Japan and Russia signed a treaty whereby each pledged not to make a separate peace with Germany, and agreed to consultation and common action should the territory or interests of each be threatened by an outside third party. This treaty helped further secure Japan's hegemony in Manchuria and Inner Mongolia.

[edit] Events of 1917

On 18 December 1916, the British Admiralty again requested Japan for naval assistance. Two of the four cruisers of the First Special Squadron at Singapore were sent to Cape Town, South Africa, and four destroyers were sent to the Mediterranean Sea, and were based out of Malta. Rear-Admiral Sato Kozo on the cruiser Akashi and 10th and 11th destroyer units (eight destroyers) arrived in Malta on 13 April 1917 via Colombo and Port Said. Eventually this Second Special Squadron totaled 17 ships: 1 cruiser, 12 destroyers, 2 ex-British destroyers and 2 sloops.

The Second Special Squadron carried out escort duties for troop transports and anti-submarine operations. The Japanese squadron made a total of 348 escort sorties from Malta, escorting 788 ships containing around 700,000 soldiers, thus contributing greatly to the war effort. A further 7,075 people were rescued from damaged and sinking ships. In return for this assistance, Great Britain recognized Japan's territorial gains in Shantung and in the Pacific islands north of the equator.

When the United States entered the war on 6 April 1917, the Americans and Japanese found themselves on the same side, despite their increasingly acrimonious relations over China and competition for influence in the Pacific. This led to the Lansing-Ishii Agreement of 2 November 1917 to help reduce tensions.

[edit] Events of 1918

Main article: Russian Civil War

In 1918, Japan continued to extend its influence and privileges in China via the Nishihara Loans. Following the collapse of the Russian Empire in Bolshevik Revolution, Japan and the United States sent forces to Siberia in 1918 to bolster the armies of the White Movement leader Admiral Aleksandr Kolchak against the Bolshevik Red Army. In this Siberian Intervention, the Imperial Japanese Army initially planned to send more than 70,000 troops to occupy Siberia as far west as Lake Baykal. The plan was scaled back considerably due to opposition from the United States.

Toward the end of the war, Japan increasingly filled orders for needed war material for its European allies. The wartime boom helped to diversify the country's industry, increase its exports, and transform Japan from a debtor to a creditor nation for the first time. Exports quadrupled from 1913 to 1918. The massive capital influx into Japan and the subsequent industrial boom led to rapid inflation. In August 1918, rice riots caused by this inflation erupted in towns and cities throughout Japan.

[edit] Events of 1919

The year 1919 saw Japan sitting among the "Big Four" (Lloyd George, Orlando, Wilson, Clemenceau) powers at the Versailles Peace Conference. Tokyo was granted a permanent seat on the Council of the League of Nations, and the Paris Peace Conference confirmed the transfer to Japan of Germany's rights in Shandong. Similarly, Germany's former Pacific islands were put under a Japanese mandate. Despite Japan’s relatively small role in World War I (and the Western powers' rejection of its bid for a racial equality clause in subsequent Treaty of Versailles), Japan had emerged as a great power in international politics by the close of the war.

The prosperity brought on by World War I did not last. Although Japan’s light industry had secured a share of the world market, Japan fell back to be a debtor nation soon after the end of the war. The ease of Japan’s victory, the negative impact of the Showa recession in 1926, and internal political instabilities helped contribute to the rise of Japanese militarism in the late 1920s to 1930s.