WHAT ALL HAPPENED AUGUST TO SEPTEMBER 1940
Find out what all happened August to September 1940

Cave paintings are discovered in Lascaux, France. (12. September 1940)

World War II: Following the German defeat in the Battle of Britain, Hitler postpones Operation Sea Lion indefinitely. (17. September 1940)

George Stibitz performs the first remote operation of a computer. (11. September 1940)

Chad becomes the first French colony to join the Allies under the administration of Félix Éboué, France's first black colonial governor. (26. August 1940)

Ip Massacre: The Hungarian Army, supported by local Hungarians, kill 158 Romanian civilians in Ip, Sălaj, a village in Northern Transylvania, as part of attempts to ethnic cleansing. (14. September 1940)

First flight of the B-25 Mitchell medium bomber. (19. August 1940)

Treaty of Craiova: Romania loses Southern Dobrudja to Bulgaria. (7. September 1940)

World War II: Italian troops conquer Sidi Barrani. (16. September 1940)

World War II: Alsace-Lorraine is annexed by the Third Reich. (7. August 1940)

World War II: The climax of the Battle of Britain, when the Royal Air Force shoots down large numbers of Luftwaffe aircraft. (15. September 1940)

British Prime Minister Winston Churchill makes the fourth of his famous wartime speeches, containing the line "Never was so much owed by so many to so few". (20. August 1940)

An Italian submarine torpedoes and sinks the Greek cruiser Elli at Tinos harbor during peacetime, marking the most serious Italian provocation prior to the outbreak of the Greco-Italian War in October. (15. August 1940)

Pennsylvania Central Airlines Trip 19 crashes near Lovettsville, Virginia. The CAB investigation of the accident is the first investigation to be conducted under the Bureau of Air Commerce act of 1938. (31. August 1940)

Treznea Massacre: The Hungarian Army, supported by local Hungarians kill 93 Romanian civilians in Treznea, Sălaj, a village in Northern Transylvania, as part of attempts to ethnic cleansing. (9. September 1940)

World War II: The Tripartite Pact is signed in Berlin by Germany, Japan and Italy. (27. September 1940)

Witold Pilecki is voluntarily captured and sent to Auschwitz in order to smuggle out information and start a resistance. (19. September 1940)

The Second Vienna Award re-assigns the territory of Northern Transylvania from Romania to Hungary. (30. August 1940)

In Mexico City, Mexico exiled Russian revolutionary Leon Trotsky is fatally wounded with an ice axe by Ramón Mercader. He dies the next day. (20. August 1940)

Estonia was illegally annexed by the Soviet Union. (6. August 1940)

World War II: The Soviet Union formally annexes Latvia. (5. August 1940)