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1939
September 1 : Germany invades Poland.
September 3: England and France (allies) declare war on Germany. -
1940
April 9 – Germany invades Norway and Denmark.
May 10 – Germany invades Belgium, the Netherlands, and Luxembourg.
June 22 – Germany takes Paris (France).
August 24 – Germany bombs London.
October 28: Italy invades Greece. -
1941
February 12 – Germany lands troops in Libya to invade Egypt.
April 6 – Germany invades Yugoslavia and Greece.
June 22 – Germany invades the Soviet Union.
December 7 - Japan bombs the US base Pearl Harbor (Hawaii)
December 8: The US declares war on Japan. -
1942
June 7 – The US defeats Japan at the Battle of Midway.
July 27 – England halts the German advance into Africa at the First Battle of El Alameín.
August 23: The Battle of Stalingrad begins between Germany and the Soviet Union.
November 3 – England defeats Germany at the Second Battle of El Alameín. -
1943
January 14: Conference of the allies (England, France, USA) in Casablanca (Morocco).
February 2 – The Soviet Union defeats Germany at the Battle of Stalingrad.
September 3: The Allies invade Italy.
September 8: Italy surrenders to the Allies.
November 28: Conference of the Allies (England, USA, Soviet Union) in Tehran (Iran). -
1944
June 6: The Allies begin the Normandy landings.
August 10 – The US defeats Japan at the Battle of Guam.
August 25 – The Allies defeat Germany at the Battle of Normandy.
October 20: Yugoslavs and Soviets liberate Belgrade.
December 29: Hungarians and Soviets liberate Budapest. -
1945
January 25 – The Allies defeat Germany at the Battle of the Bulge.
February 4: Conference of the allies (England, USA, Soviet Union) in Yalta (Crimea, Ukraine).
April 25: Soviet Union troops take Berlin.
April 28: Mussolini is executed
April 30: Adolf Hitler commits suicide in Berlin.
June 21 – The US defeats Japan at the Battle of Okinawa.
July 17: Conference of the allies (England, USA, Soviet Union) in Potsdam (Berlin, Germany).
September 2: Japan surrenders to the US.