Walt Disney's animated Dumbo was released in New York City, New York, US.
Hitler declared that all of Germany's Jews must be relocated, and Polish Jews found outside of their ghettos would be shot on sight.
Adolf Hitler's German military attacked Moscow.
Babi Yar massacre begins.
Jews in Germany over six years old were forced to wear the yellow star of David.
Finland declared war on the Soviet Union after an air raid was launched on Finnish cities.
Germany invades the Soviet Union.
Washington National Airport became the US first federal airport.
The world's first programmable, fully automatic computer is presented.
Adolf Hitler's deputy, Rudolf Hess, parachutes into Scotland to broker a peace agreement.
German submarine U-110 was captured by the Royal Navy, who found an Enigma cipher machine onboard.
Bob Hope performed his first United Service Organization show at California's March Field for service members and their families.
The National Gallery of Art opens in Washington. D.C.
Dr. Glenn T. Seaborg discovered the chemical element Plutonium.
Peruvian ambassador Ricardo Rivera-Schreiber gave a warning that Japan would attack Pearl Harbor.
Pioneering English pilot Amy Johnson went missing after bailing out of her plane over the Thames River.
California's first freeway, Arroyo Seco Parkway, officially opened to traffic.
The worst German air raid of the Blitz occurred.
Nazis officially sealed off the Warsaw Ghetto.
Benjamin O. Davis Sr. became the first African American US Army brigadier general.
The Blitz bombing of London's Balham Tube Station was bombed, killing over 60 people.
Tripartite Pact is signed.
17,000-year-old cave art was discovered in France.
Buckingham Palace, London, was blasted during The Blitz mass air bombings by Germany.
The Blitz began.
Adolf Hitler made plans to invade Britain starting on September 21, 1940.
Exiled Soviet leader Leon Trotsky was assassinated with an ice axe in Mexico City.
Latvian Soviet Socialist Republic is established.
Adolf Hitler offered peace to Great Britain if they would surrender and allow Germany to dominate the country.
Adolf Hitler planned to invade Britain under the guise name 'Operation Sealion.'
Nazi forces moved on Britain for the first time after attacking shipping containers in the English Channel.
Hitler had his first and only tour of Paris, ticking Eiffel Tower and Napoleon's grave off his bucket list.
The first Dairy Queen restaurant opened in Joliet, Illinois, US.
A speech by Charles de Gaulle sparks the French Resistance to German occupation.
Sir Winston Churchill gave his famous 'Finest Hour' speech in the House of Commons.
The three Baltic states fall under Soviet occupation.
German troops occupy Paris.
Auschwitz concentration camp started operation after 728 Polish prisoners became the first to arrive.
Italy declared war on France and Britain.
The discovery of the chemical element Neptunium was announced.
Germany invaded France during WWII.
Winston Churchill presented his famous speech 'We Shall Fight on the Beaches.'
The first prisoners arrive at Auschwitz concentration camp.
The world's first Mcdonald's opened in San Bernardino, California.
Winston Churchill made his famous speech to the House of Commons.
Heinrich Himmler ordered the construction of the Auschwitz Concentration Camp.
Germany invades Denmark and Norway.
Booker T. Washington became the first Black person pictured on a US postage stamp.
Soviet troops murder about 22,000 Polish nationals.
The first US telecast was made from an airplane flying over New York City.
