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| Shōwa period (pre-1945) | |
|---|---|
| Name | Shōwa period (pre-1945) |
| Native name | 昭和時代（前期） |
| Start | 1926 |
| End | 1945 |
| Emperor | Hirohito |
| Capital | Tokyo |
| Major events | Mukden Incident; Manchurian Incident; Second Sino-Japanese War; Tripartite Pact; Pearl Harbor |
Shōwa period (pre-1945) The pre-1945 phase of the Shōwa era encompassed the reign of Emperor Hirohito from 1926 to 1945 and saw major shifts in Japanese politics, diplomacy, warfare, and society marked by militarization, imperial expansion, and confrontation with China, Soviet Union, United States, and European powers. This era included episodes such as the Mukden Incident, the establishment of Manchukuo, the Second Sino-Japanese War, and alliance with Nazi Germany and Fascist Italy culminating in the Pacific War.
The era began with the accession of Emperor Hirohito following the death of Emperor Taishō and was framed by the legacy of the Meiji Restoration, the precedent of the Meiji Constitution, and the institutional influence of the Imperial Japanese Army and Imperial Japanese Navy. Imperial household continuity involved figures such as Prince Higashikuni Naruhiko and institutions like the Imperial Household Agency, while state rituals and the role of the Yasukuni Shrine intertwined with debates over the kokutai and imperial prerogatives. Preceding political arrangements under Prime Ministers including Tanaka Giichi and Wakatsuki Reijirō set contexts that interacted with military factions such as the Kōdōha and Tōseiha.
Domestic governance saw a shift from party cabinets like those of Katō Takaaki and Hamaguchi Osachi toward cabinets dominated by military figures including Inukai Tsuyoshi, Saitō Makoto, Konoe Fumimaro, and Tojo Hideki. The 1930s featured incidents such as the May 15 Incident and the February 26 Incident that undermined party politics, empowered the Home Ministry, and influenced legal frameworks like the Peace Preservation Law and the Imperial Rescript on Education. Political networks involved actors from the Rikken Minseitō, the Rikken Seiyūkai, industrial zaibatsu including Mitsubishi, Mitsui, and Sumitomo, and policy organs such as the South Manchurian Railway Company and the Cabinet Research Bureau.
Foreign policy adopted aggressive stances manifested in the Mukden Incident leading to the creation of Manchukuo, prolonged conflict in the Second Sino-Japanese War, and clashes with the Soviet Union at Khalkhin Gol (Nomonhan). Military leadership in theater included commanders like Iwane Matsui and Yoshijirō Umezu, while strategic alignment produced the Tripartite Pact with Nazi Germany and Kingdom of Italy. Diplomatic tensions with the United States and embargoes such as the oil embargo and the freezing of Japanese assets propelled decisions culminating in the Attack on Pearl Harbor and wider entry into the Pacific War.
Economic policy balanced industrial mobilization led by zaibatsu conglomerates—Mitsubishi Heavy Industries, Kawasaki Heavy Industries, Ishikawajima Shipyard—and state planning institutions like the Ministry of Finance and the Munitions Ministry. Rural and urban societies experienced shifts tied to the Rice Riots of 1918 aftershocks, labor activism involving unions such as the Sōdōmei, and population movements to industrial centers including Osaka and Yokohama. Wartime economic controls extended to price controls, rationing overseen by agencies like the Food Control Board, and mobilization of colonial economies in Korea (under Japanese rule), Taiwan (under Japanese rule), and Manchuria.
Cultural life intersected with state ideology through the propagation of kokutai, reverence for Emperor Hirohito, and educational norms set by the Imperial Rescript on Education; publishing and broadcasting industries including newspapers such as Asahi Shimbun, Yomiuri Shimbun, and broadcasters like NHK were subject to censorship and mobilization. Intellectuals and writers—Kunikida Doppo earlier, later figures responding to the era like Kinoaki Matsuo and critics tied to Proletarian Literature Movement—engaged with themes of nationalism, while films directed by studios like Nikkatsu and Toho and works by artists such as Takehisa Yumeji and Lafcadio Hearn influenced public sentiment. Propaganda organs such as the Information Bureau and military censors amplified narratives found in textbooks and exhibitions at institutions like the Tokyo National Museum.
Political repression targeted leftist movements including the Japan Communist Party and labor organizers, enforced through the Special Higher Police (Tokkō), arrests under the Peace Preservation Law, and high-profile incidents such as the February 26 Incident and assassination of Prime Minister Inukai Tsuyoshi. Right-wing groups including Aikoku-kai and ultranationalist figures like Hideki Tojo and Sakuramoto Kōsaku used violence and intimidation, while state policing involved the Metropolitan Police Department and secret policing methods later scrutinized in postwar trials such as those at the International Military Tribunal for the Far East.
Escalation into full-scale war with China from 1937, strategic confrontations at Khalkhin Gol, economic sanctions by United States and United Kingdom, and diplomatic initiatives including the Tripartite Pact preceded the outbreak of the Pacific War after Pearl Harbor; the wartime period produced widespread military campaigns in Southeast Asia involving battles like Singapore and campaigns in Philippines, as well as occupation administrations in Dutch East Indies and British Malaya. The era concluded in 1945 with Japan’s defeat, the Bombing of Tokyo, the Atomic bombings of Hiroshima and Nagasaki, the Soviet–Japanese War, and the eventual surrender that led to Allied occupation and the postwar transformations administered by authorities including the Supreme Commander for the Allied Powers.