? 1926: Emperor Taish? dies (December 25).
? 1927: Tanaka Giichi becomes prime minister (April 20).
? 1928: Emperor Sh?wa is formally installed as emperor (November 10).
? 1929: Hamaguchi Osachi becomes prime minister (July 2).
? 1930: Hamaguchi is wounded in an assassination attempt (November 14).
? 1931: Hamaguchi dies and Wakatsuki Reijiro becomes prime minister (April 14). Japan occupies Manchuria after the Mukden Incident (September 18). Inukai Tsuyoshi becomes prime minister (December 13) and increases funding for the military in China.
? 1932: After an attack on Japanese monks in Shanghai (January 18), Japanese forces shell the city (January 29). Manchukuo is established with Henry Pu Yi as emperor (February 29). Inukai is assassinated during a coup attempt and Saito Makoto becomes prime minister (May 15). Japan is censured by the League of Nations (December 7).
? 1933: Japan leaves the League of Nations (March 27).
? 1934: Okada Keisuke becomes prime minister (July 8). Japan withdraws from the Washington Naval Treaty (December 29).
? 1936: Coup attempt (February 26 Incident). Hirota Koki becomes prime minister (March 9). Japan signs its first pact with Germany (November 25) and occupies Tsingtao (December 3). Mengchiang established in Inner Mongolia.
? 1937: Hayashi Senjuro becomes prime minister (February 2). Prince Konoe Fumimaro becomes prime minister (June 4). Battle of Lugou Bridge (July 7). Japan captures Beijing (July 31). Japanese troops occupy Nanjing (December 13), beginning the Nanjing massacre.
? 1938: Battle of Taierzhuang (March 24). Canton falls to Japanese forces (October 21).
? 1939: Hiranuma Kiichiro becomes prime minister (January 5). Abe Nobuyuki becomes prime minister (August 30).
? 1940: Yonai Mitsumasa becomes prime minister (January 16). Konoe becomes prime minister for a second term (July 22). Hundred Regiments Offensive (August?September). Japan occupies Indochina in the wake of the fall of Paris, and signs the Tripartite Pact (September 27).
? 1941: General Tojo Hideki becomes prime minister (October 18). Japanese naval forces attack Pearl Harbor, Hawaii (December 7), prompting the United States to declare war on Japan (December 8). Japan conquers Hong Kong (December 25).
? 1942: Singapore surrenders to Japan (February 15). Japan bombs Australia (February 19). Doolittle Raid on Tokyo (April 18). Battle of the Coral Sea (May 4?May 8). U.S. and Filipino forces in the Battle of the Philippines (1942) surrender (May 8). Japan defeated at the Battle of Midway (June 6). Allied victory in the Battle of Milne Bay (September 5).
? 1943: Allied victory in Battle of Guadalcanal (February 9). Japan defeated at Battle of Tarawa (November 23).
? 1944: Tojo resigns and Koiso Kuniaki becomes prime minister (July 22).
? 1945: U.S. bombers begin firebombing of major Japanese cities. Japan defeated at Battle of Iwo Jima (March 26). Admiral Suzuki Kantaro becomes prime minister (April 7). Japan defeated at Battle of Okinawa (June 21). U.S. drops atomic bombs on Hiroshima (August 6) and Nagasaki (August 9). Japan surrenders (September 2): Allied occupation begins.