WHAT ALL HAPPENED APRIL TO NOVEMBER 1915
Find out what all happened April to November 1915

The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres. (22. April 1915)

World War I: Italy declares war on Austria-Hungary. (24. May 1915)

Militia officer Henry Pedris executed by firing squad at Colombo, Ceylon - an act widely regarded as a miscarriage of justice by the British colonial authorities. (7. July 1915)

Jewish American Leo Frank is lynched for the alleged murder of a 13-year-old girl in Marietta, Georgia, United States. (17. August 1915)

Henry James becomes a British citizen, to highlight his commitment to England during the first World War. (16. July 1915)

World War I: The Kingdom of Bulgaria joins the Central Powers. (14. October 1915)

World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915. (4. August 1915)

Japanese 21 Demands Ultimatum to China (Commemorated as National Day of Humiliation) (7. May 1915)

The Battle for the Hohenzollern Redoubt marks the end of the Battle of Loos in northern France, World War I. (13. October 1915)

French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I. (18. April 1915)

The RMS Lusitania departs from New York City on her two hundred and second, and final, crossing of the North Atlantic. Six days later, the ship is torpedoed off the coast of Ireland with the loss of 1,198 lives, including 128 Americans, rousing American sentiment against Germany. (1. May 1915)

Woman's suffrage: In New York City, 25,000-33,000 women march on Fifth Avenue to advocate their right to vote. (23. October 1915)

The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide. (24. April 1915)

Bulgaria enters World War I as one of the Central Powers. (5. October 1915)

World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people including 128 Americans. Public reaction to the sinking turns many formerly pro-Germans in the United States against the German Empire (7. May 1915)

World War I: The Second Battle of Champagne begins. (25. September 1915)

The passenger ship S.S. Eastland capsizes while tied to a dock in the Chicago River. A total of 844 passengers and crew are killed in the largest loss of life disaster from a single shipwreck on the Great Lakes. (24. July 1915)

Three trains collide in the Quintinshill rail disaster near Gretna Green, Scotland, killing 227 people and injuring 246; the accident is found to be the result of non-standard operating practices during a shift change at a busy junction. (22. May 1915)

World War I: Italy joins the Allies after they declare war on Austria-Hungary. (23. May 1915)

World War I: Battle of Sari Bair – the Allies mount a diversionary attack timed to coincide with a major Allied landing of reinforcements at Suvla Bay. (6. August 1915)