Germany invades Poland which starts WWII in Europe
France and Britain declare war on Germany
Poland surrenders to Germany; Germany divides Poland with the Soviet Union
Germany invades Denmark and Norway, soon controlling their nations.
Italy enters the war by conquering southern France
Germany, Italy, and Japan sign the Tripartite Pact
Period: to
Germany, Italy, and Hungary invade Yugoslavia. Germany and Bulgaria later invade Greece to support the Italians.
Japan bombs Pearl Habor, attacking the United States
The United States enter WWII by declaring war on Japan.
Nazi Germany and its partners declare war on the United States
Allied forces conquer regions revolving Tunisia, ending the North African campaign by the Allies.
Allied forces gain control of Sicily
Allied forces liberate Rome, gaining targets on Germany for the first time in the war.
Allied forces break out onto Normandy to open a second front against Germany,
The Romanian government overthrows their current regime and switches sides in the war. They later compel Bulgaria and Germany to evacuate Greece, Albania and Yugoslavia by October.
Germans are in retreat after multiple defeats in their offensive attempts.
The Soviets launch an offensive to circle Berlin
Hitler commits suicide, and 8 days later Germany surrenders.
The United States drops an atomic bomb on Hiroshima
The United States drops a second atomic bomb on Nagasaki