WHAT ALL HAPPENED APRIL TO SEPTEMBER 1915
Find out what all happened April to September 1915

Foundation of the British Women's Institute. (16. June 1915)

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

William Jennings Bryan resigns as Woodrow Wilson's Secretary of State over a disagreement regarding the United States' handling of the sinking of the RMS Lusitania. (9. June 1915)

First Order of the Arrow ceremony takes place and the Order of the Arrow is founded. (16. July 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)

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

A story in New York World reveals that the Weimar German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production. (15. August 1915)

An International Railway trolley with an extreme overload of 157 passengers crashes near Queenston, Ontario, killing 15. (7. July 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)

Lieutenant Kurt Wintgens achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker. (1. July 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)

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)

US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident. (29. August 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)

World War I: The Battle of Gallipoli begins—The invasion of the Turkish Gallipoli Peninsula by Australian, British, French and New Zealand troops begins with landings at Anzac Cove and Cape Helles. (25. April 1915)

World War I: Second Battle of Artois between German and French forces. (9. May 1915)

RFC Captain Lanoe Hawker becomes the first British military aviator to earn the Victoria Cross, for defeating three German two-seat observation aircraft in one day, over the Western Front. (25. July 1915)

The pacifist Zimmerwald Conference begins. (5. September 1915)