WHAT ALL HAPPENED MAY TO SEPTEMBER 1937
Find out what all happened May to September 1937

Chinese Air Force Day: The beginning of air-to-air combat of the Second Sino-Japanese War and World War II in general, when 6 Imperial Japanese Mitsubishi G3M bombers are shot down by the Nationalist Chinese Air Force while raiding Chinese air bases. (14. August 1937)

Nine nations attend the Nyon Conference to address international piracy in the Mediterranean Sea. (10. September 1937)

Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders. (11. June 1937)

Spanish Civil War: Peña Blanca is taken; the end of the Battle of El Mazuco. (22. September 1937)

A German expedition led by Karl Wien loses sixteen members in an avalanche on Nanga Parbat. It is the worst single disaster to occur on an 8000m peak. (15. June 1937)

Tōngzhōu Incident: in Tōngzhōu, China, the East Hopei Army attacks Japanese troops and civilians. (29. July 1937)

Alabama drops rape charges against the so-called "Scottsboro Boys". (24. July 1937)

The Marihuana Tax Act of 1937 is passed in America, the effect of which is to render marijuana and all its by-products illegal. (2. August 1937)

A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean. (21. May 1937)

The world's first emergency telephone number, 999, is introduced in London (30. June 1937)

The Duke of Windsor marries Wallis Simpson. (3. June 1937)

Spanish Civil War: The German Condor Legion, equipped with Heinkel He 51 biplanes, arrives in Spain to assist Francisco Franco's forces. (7. May 1937)

Toyota Motors becomes an independent company. (28. August 1937)

Spanish Civil War: Llanes falls to the Nationalists following a one-day siege. (5. September 1937)

The Battle of Shanghai begins. (13. August 1937)

Balinese Tiger declared extinct. (27. September 1937)

In the Spanish Civil War, the Basque Army surrenders to the Italian Corpo Truppe Volontarie following the Santoña Agreement. (24. August 1937)

Volkswagen (VW), the German automobile manufacturer was founded. (28. May 1937)

The Golden Gate Bridge in San Francisco, California, is officially opened by President Franklin D. Roosevelt in Washington, D.C., who pushes a button signaling the start of vehicle traffic over the span. (28. May 1937)

Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad. (8. July 1937)