WHAT ALL HAPPENED SEPTEMBER TO NOVEMBER 1917
Find out what all happened September to November 1917

In Milwaukee, Wisconsin, 9 members of the Milwaukee Police Department are killed by a bomb, the most deaths in a single event in U.S. police history until the September 11 attacks in 2001. (24. November 1917)

World War I: Battle of Beersheba – the "last successful cavalry charge in history". (31. October 1917)

Ukraine is declared a republic. (20. November 1917)

World War I: Brazil declared in state of war with Central Powers. (26. October 1917)

October Revolution: In Tallinn, Estonia, Communist leader Jaan Anvelt leads revolutionaries in overthrowing the Provisional Government (As Estonia and Russia are still using the Julian Calendar, subsequent period references show an October 23 date). (5. November 1917)

World War I: Battle of Cambrai begins – British forces make early progress in an attack on German positions but are later pushed back. (20. November 1917)

First British bombing of Germany in World War I. (17. October 1917)

Lenin calls for the October Revolution. (23. October 1917)

The Battle of Broodseinde fought between the British and German armies in Flanders. (4. October 1917)

Battle of Caporetto; Italy suffers a catastrophic defeat by the forces of Austria-Hungary and Germany on the Austro-Italian front of World War I (lasts until 19 November - also called Twelfth Battle of the Isonzo). (24. October 1917)

World War I: The First Battle of Passchendaele takes place resulting in the largest single day loss of life in New Zealand history. (12. October 1917)

World War I: The Battle of Polygon Wood begins. (26. September 1917)

The Gregorian calendar date of the October Revolution, which gets its name from the Julian calendar date of 25 October. On this date in 1917, the Bolsheviks storm the Winter Palace. (7. November 1917)

Russia is officially proclaimed a republic. (14. September 1917)

World War I: At Vincennes outside of Paris, Dutch dancer Mata Hari is executed by firing squad for spying for the German Empire. (15. October 1917)

The Love Field in Dallas, Texas is opened. (19. October 1917)

The People's Commissars give authority to Vladimir Lenin, Leon Trotsky, and Joseph Stalin. (8. November 1917)

Joseph Stalin enters the provisional government of Bolshevik Russia. (9. November 1917)

St. Tikhon of Moscow is elected the Patriarch of Moscow and of the Russian Orthodox Church. (5. November 1917)

World War I: Third Battle of Ypres ends: After three months of fierce fighting, Canadian forces take Passchendaele in Belgium. (6. November 1917)