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Germany invades Poland
World War II begins when Germany invades Poland in a blitzkrieg. England and France react by declaring war on Germany. https://www.nationalgeographic.com/pearlharbor/history/wwii_timeline.html -
Japan occupies French Colony
Japanese troops begin to occupy the French colony of Indochina.
The United States cuts off oil exports to Japan. -
Japan begins to plan attack on Pearl Harbor
Japanese Admiral Isoroku Yamamoto begins planning an air attack on Pearl Harbor. -
Japanese Army and Navy say to "get ready for war" against United States
Japanese Army and Navy officers say Japan should “get ready for war” against the United States. -
Japan attacks Pearl Harbor
America joins the war. -
Atomic bombs dropped on Hiroshima and Nagasaki
Atomic bombs are dropped on Hiroshima (August 6) and Nagasaki (August 9). -
Japanese surrender
Japanese officials sign the surrender document.