WHAT ALL HAPPENED AUGUST TO OCTOBER 1939
Find out what all happened August to October 1939

NBC broadcasts the first televised American football game between the Waynesburg Yellow Jackets and the Fordham Rams. Fordham won the game 34-7. (30. September 1939)

Nazi Germany and the Soviet Union agree on a division of Poland after their invasion during World War II. (28. September 1939)

Adolf Hitler signs an order to begin the systematic euthanasia of mentally ill and disabled people. (1. September 1939)

World War II: Canada declares war on Germany, the country's first independent declaration of war (11. September 1939)

World War II: following the start of the invasion of Poland the previous day, the Free City of Danzig (now Gdańsk, Poland) is annexed by Nazi Germany. (2. September 1939)

World War II: First attack on British territory by the German Luftwaffe. (16. October 1939)

World War II: The Battle of Hel begins, the longest-defended pocket of Polish Army resistance during the German invasion of Poland. (9. September 1939)

World War II: A German U-boat U 29 sinks the British aircraft carrier HMS Courageous. (17. September 1939)

Taisto Mäki becomes the first man to run the 10,000 metres in under 30 minutes, in a time of 29:52.6 (17. September 1939)

World War II: The Battle of Barking Creek. (6. September 1939)

General George C. Marshall becomes Chief of Staff of the United States Army. (1. September 1939)

World War II: The United Kingdom and France begin a naval blockade of Germany that lasts until the end of the war. This also marks the beginning of the Battle of the Atlantic. (3. September 1939)

World War II: France, the United Kingdom, New Zealand and Australia declare war on Germany after the invasion of Poland, forming the Allies. (3. September 1939)

World War II: Canada declares war on Nazi Germany, joining the Allies – France, the United Kingdom, New Zealand and Australia. (10. September 1939)

Albert Einstein and Leó Szilárd write a letter to Franklin D. Roosevelt, urging him to begin the Manhattan Project to develop a nuclear weapon. (2. August 1939)

World War II: South Africa declares war on Germany. (6. September 1939)

The New York Municipal Airport (later renamed LaGuardia Airport) is dedicated. (15. October 1939)

Switzerland mobilizes its forces and the Swiss Parliament elects Henri Guisan to head the Swiss Army (an event that can happen only during war or mobilization). (1. September 1939)

World War II: Germany's invasion of Poland ends with the surrender of Polesia army after the Battle of Kock (6. October 1939)

World War II: The Estonian military boards the Polish submarine ORP Orzeł in Tallinn, sparking a diplomatic incident that the Soviet Union will later use to justify the annexation of Estonia. (14. September 1939)