Timeline
-September 18, 1931
Japan invades Manchuria.
-July 7, 1937
Japan invades China, initiating World War II in the Pacific.
-September 29, 1938
Germany, Italy, Great Britain, and France sign the Munich agreement which forces the Czechoslovak Republic to cede the Sudetenland
-August 23, 1939
Nazi Germany and the Soviet Union sign a nonaggression agreement
-September 1, 1939
Germany invades Poland, starting World War II in Europe.
-September 3, 1939
Great Britain and France declare war on Germany.
-September 17, 1939
Soviet Union invades Poland from the east.
-April 9, 1940–June 9, 1940
Germany invades Denmark and Norway.
-June 10, 1940
Italy enters the war.
-September 27, 1940
Germany, Italy, and Japan sign the Tripartite Pact.
-June 22, 1941–November 1941
Nazi Germany and its Axis partners invade the Soviet Union.
-December 7, 1941
Japan bombs Pearl Harbor.
-December 8, 1941
United States declares war on Japan, entering World War II.
-December 11–13, 1941
Nazi Germany and its Axis partners declare war on the United States.
-April 16, 1945
Soviets launch their final offensive, encircling Berlin.
-April 30, 1945
Hitler commits suicide.
-May 7, 1945
Germany surrenders to the western Allies.
-May 9, 1945
Germany surrenders to the Soviets.
-August 6, 1945
United States drops an atomic bomb on Hiroshima.
-August 8, 1945
Soviet Union declares war on Japan and invades Manchuria.
-September 2, 1945
Japan formally surrenders, ending World War II.
Japan invades Manchuria.
-July 7, 1937
Japan invades China, initiating World War II in the Pacific.
-September 29, 1938
Germany, Italy, Great Britain, and France sign the Munich agreement which forces the Czechoslovak Republic to cede the Sudetenland
-August 23, 1939
Nazi Germany and the Soviet Union sign a nonaggression agreement
-September 1, 1939
Germany invades Poland, starting World War II in Europe.
-September 3, 1939
Great Britain and France declare war on Germany.
-September 17, 1939
Soviet Union invades Poland from the east.
-April 9, 1940–June 9, 1940
Germany invades Denmark and Norway.
-June 10, 1940
Italy enters the war.
-September 27, 1940
Germany, Italy, and Japan sign the Tripartite Pact.
-June 22, 1941–November 1941
Nazi Germany and its Axis partners invade the Soviet Union.
-December 7, 1941
Japan bombs Pearl Harbor.
-December 8, 1941
United States declares war on Japan, entering World War II.
-December 11–13, 1941
Nazi Germany and its Axis partners declare war on the United States.
-April 16, 1945
Soviets launch their final offensive, encircling Berlin.
-April 30, 1945
Hitler commits suicide.
-May 7, 1945
Germany surrenders to the western Allies.
-May 9, 1945
Germany surrenders to the Soviets.
-August 6, 1945
United States drops an atomic bomb on Hiroshima.
-August 8, 1945
Soviet Union declares war on Japan and invades Manchuria.
-September 2, 1945
Japan formally surrenders, ending World War II.