WHAT ALL HAPPENED APRIL TO OCTOBER 1917
Find out what all happened April to October 1917

Sir Robert Borden introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%). (25. July 1917)

The East St. Louis Riots end. (2. July 1917)

A Great Fire in Thessaloniki, Greece destroys 32% of the city leaving 70,000 individuals homeless. (18. August 1917)

World War I: The Battle of Arras – the battle begins with Canadian Corps executing a massive assault on Vimy Ridge. (9. April 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 Battle of Broodseinde fought between the British and German armies in Flanders. (4. October 1917)

King Alexander assumes the throne of Greece after his father Constantine I abdicates under pressure by allied armies occupying Athens. (11. June 1917)

Vladimir Lenin returns to Petrograd, Russia from exile in Switzerland. (16. April 1917)

The first U.S. troops arrive in France to fight alongside Britain and France against Germany in World War I. (26. June 1917)

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

King George V issues a Proclamation stating that the male line descendants of the British Royal Family will bear the surname Windsor. (17. July 1917)

World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia. (20. July 1917)

The Great Atlanta fire of 1917 causes $5.5 million in damages, destroying some 300 acres including 2,000 homes, businesses and churches, displacing about 10,000 people but leading to only one fatality (due to heart attack). (21. May 1917)

Traditionally understood date of the October Revolution, involving the capture of the Winter Palace, Petrograd, Russia. The date refers to the Julian Calendar date, and corresponds with November 7 in the Gregorian calendar. (25. October 1917)

Three children report the first apparition of Our Lady of Fátima in Fátima, Portugal. (13. May 1917)

The Allies reach the Yser Canal at the Battle of Passchendaele. (27. July 1917)

In a game against the Washington Senators, Boston Red Sox pitcher Ernie Shore retires 26 batters in a row after replacing Babe Ruth, who had been ejected for punching the umpire. (23. June 1917)

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

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

The Commonwealth War Graves Commission is established through Royal Charter to mark, record and maintain the graves and places of commemoration of Commonwealth of Nations military forces. (21. May 1917)