WHAT ALL HAPPENED MARCH TO SEPTEMBER 1915
Find out what all happened March to September 1915

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

NACA, the predecessor of NASA, is founded. (3. March 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 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)

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: Cornered off the coast of Chile by the Royal Navy after fleeing the Battle of the Falkland Islands, the German light cruiser SMS Dresden is abandoned and scuttled by her crew. (14. March 1915)

An International Railway trolley with an extreme overload of 157 passengers crashes near Queenston, Ontario, killing 15. (7. 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: The Second Battle of Champagne begins. (25. September 1915)

First Order of the Arrow ceremony takes place and the Order of the Arrow is founded. (16. July 1915)

The pacifist Zimmerwald Conference begins. (5. September 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)

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)

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

Denmark amends its constitution to allow women's suffrage. (5. June 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)

Lassen Peak erupts with a powerful force, and is the only mountain other than Mount St. Helens to erupt in the contiguous US during the 20th century. (22. May 1915)

World War I: Massive naval attack in Battle of Gallipoli. Three battleships were sunk during a failed British and French naval attack on the Dardanelles. (18. March 1915)

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