WHAT ALL HAPPENED JULY TO OCTOBER 1940
Find out what all happened July to October 1940

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

World War II: Battle of Britain – The German Luftwaffe begins attacking British convoys in the English Channel thus starting the battle (this start date is contested, though). (10. July 1940)

World War II: Battle of Britain – During a night-time air raid by the German Luftwaffe, St. Paul's Cathedral in the City of London, England is hit by a bomb. (9. October 1940)

World War II: the Vichy government is established in France. (10. July 1940)

Doodlebug Disaster: A doodlebug train in Cuyahoga Falls, Ohio collides with a multi-car freight train heading in the opposite direction, killing 43 people. (31. July 1940)

Indian independence leader Subhas Chandra Bose is arrested and detained in Calcutta. (2. July 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)

World War II: Greece rejects Italy's ultimatum. Italy invades Greece through Albania, marking Greece's entry into World War II. (28. October 1940)

World War II: Army order 112 forms the Intelligence Corps of the British Army. (19. July 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)

Denmark leaves the League of Nations. (20. July 1940)

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

Balham underground station disaster in London, England, occurs during the Nazi Luftwaffe air raids on Great Britain. (14. October 1940)

Holocaust: The Warsaw Ghetto is established. (16. October 1940)

World War II: The Battle of Britain ends – the United Kingdom prevents a possible German invasion. (31. October 1940)

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

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

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