WHAT ALL HAPPENED APRIL TO SEPTEMBER 1917
Find out what all happened April to September 1917

World War I: Arabian troops led by T. E. Lawrence ("Lawrence of Arabia") and Auda ibu Tayi capture Aqaba from the Ottoman Empire during the Arab Revolt. (6. July 1917)

World War I: Conscription begins in the United States as "Army registration day". (5. June 1917)

World War I: the deadliest German air raid on London during World War I is carried out by Gotha G bombers and results in 162 deaths, including 46 children, and 432 injuries. (13. June 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)

The Bisbee Deportation occurs as vigilantes kidnap and deport nearly 1,300 striking miners and others from Bisbee, Arizona. (12. July 1917)

Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority. (30. August 1917)

World War I: Canadian forces successfully complete the taking of Vimy Ridge from the Germans. (12. April 1917)

World War I: The United States declares war on Germany (see President Woodrow Wilson's address to Congress). (6. April 1917)

World War I: The Selective Service Act of 1917 is passed, giving the President of the United States the power of conscription. (18. May 1917)

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

Ten Suffragettes are arrested while picketing the White House. (28. August 1917)

World War I: Battle of Messines – Allied soldiers detonated ammonal mines underneath German trenches at Messines Ridge, killing 10,000 German troops. (7. June 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)

World War I: Battle of Mărăşeşti between the Romanian and German armies begins. (6. August 1917)

World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany. (2. April 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)

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

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

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