WHAT ALL HAPPENED MAY TO DECEMBER 1940
Find out what all happened May to December 1940

The first flight of the Vought F4U Corsair. (29. May 1940)

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

Indian independence leader Subhas Chandra Bose is arrested and detained in Calcutta. (2. July 1940)

World War II: After a brief lull in the Battle of France, the Germans renew the offensive against the remaining French divisions south of the River Somme in Operation Fall Rot ("Case Red"). (5. June 1940)

USS Sailfish is recommissioned. It was originally the USS Squalus. (15. May 1940)

World War II: under the Molotov-Ribbentrop Pact, the Soviet Union presents an ultimatum to Romania requiring it to cede Bessarabia and the northern part of Bukovina. (26. June 1940)

A group of 728 Polish political prisoners from Tarnów become the first residents of the Auschwitz concentration camp. (14. June 1940)

World War II: the old city centre of the Dutch town of Middelburg is bombed by the German Luftwaffe, to force the surrender of the Dutch armies in Zeeland. (17. May 1940)

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

World War II: Belgium surrenders to Nazi Germany to end the Battle of Belgium. (28. May 1940)

World War II: The Battle of the Netherlands ends with the Netherlands surrendering to Germany. (14. May 1940)

World War II: The German 2nd Panzer Division captures the port of Boulogne-sur-Mer; the surrender of the last French and British troops marks the end of the Battle of Boulogne (25. May 1940)

World War II: The Luftwaffe bombs Paris. (3. June 1940)

World War II: Following the initial Italian invasion, Greek troops counterattack into Italian-occupied Albania and capture Korytsa. (22. November 1940)

Greco-Italian War: The Italian invasion of Greece fails as outnumbered Greek units repulse the Italians in the Battle of Elaia–Kalamas. (8. November 1940)

King Carol II of Romania abdicates and is succeeded by his son Michael. (6. September 1940)

World War II: Italy declares war on France and the United Kingdom. (10. June 1940)

Armistice Day Blizzard: An unexpected blizzard kills 144 in the U.S. Midwest. (11. November 1940)

World War II: Battle of Taranto – The Royal Navy launches the first aircraft carrier strike in history, on the Italian fleet at Taranto. (11. November 1940)