WHAT ALL HAPPENED JULY TO OCTOBER 1939
Find out what all happened July to October 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: A German U-boat U 29 sinks the British aircraft carrier HMS Courageous. (17. September 1939)

World War II: The Battle of Kępa Oksywska concludes, with Polish losses reaching roughly 14% of all the forces engaged. (19. September 1939)

Lou Gehrig, recently diagnosed with Amyotrophic lateral sclerosis, informs a crowd at Yankee Stadium that he considered himself "The luckiest man on the face of the earth", then announces his retirement from major league baseball. (4. July 1939)

World War II: Nazi Germany and Slovakia invade Poland, beginning the European phase of World War II. (1. September 1939)

Romanian Prime Minister Armand Călinescu is assassinated by far-right legionnaires of the fascist paramilitary organization called the Iron Guard. (21. September 1939)

Warsaw surrenders to Nazi Germany during World War II. (28. September 1939)

The Wound Badge for Wehrmacht, SS, Kriegsmarine, and Luftwaffe soldiers is instituted. The final version of the Iron Cross is also instituted on this date. (1. 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)

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)

13 Stukas dive into the ground during a disastrous air-practice at Neuhammer. There are no survivors. (15. August 1939)

Holocaust: the last remaining Jewish enterprises in Germany are closed. (6. July 1939)

World War II: Polish government of Ignacy Mościcki flees to Romania. (18. September 1939)

World War II: The submarine HMS Oxley is mistakenly sunk by the submarine HMS Triton near Norway and becomes the Royal Navy's first loss. (10. September 1939)

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

The United Kingdom and Poland form a military alliance in which the UK promises to defend Poland in case of invasion by a foreign power. (25. August 1939)

Huỳnh Phú Sổ founds Hòa Hảo Buddhism. (4. July 1939)

World War II: The Soviet Union joins Nazi Germany's invasion of Poland during the Polish Defensive War of 1939. (17. September 1939)

Burmese national hero U Ottama dies in prison after a hunger strike to protest Britain's colonial government. (9. September 1939)

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