World War I Chlorine Gas Attack at Second Battle of Ypres, April 22, 1915

The Rocky Mountain National Park is established by an act of the U.S. Congress. Date: January 26, 1915 Read more on Wikipedia → 📅 Other events on January 26 📅 Events on this day in 1915 📅 On This Day (Today) More events from 1915World War I: German 12th Army Occupies Warsaw, August 4, 1915German…

World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire. Date: September 30, 1915 Read more on Wikipedia → 📅 Other events on September 30 📅 Events on this day in 1915 📅 On This Day (Today) More events from 1915McMahon-Hussein Correspondence Begins on Arab…

Russia defeats Ottoman Turkey in the Battle of Sarikamish during the Caucasus Campaign of World War I. Date: January 17, 1915 Read more on Wikipedia → 📅 Other events on January 17 📅 Events on this day in 1915 📅 On This Day (Today) More events from 1915First Synchronized Fighter Aerial Victory by Kurt Wintgens…

World War I: 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. Date: April 22, 1915 Read more on Wikipedia → 📅 Other events on April 22 📅 Events on this day in 1915 📅 On This Day (Today)…

Three trains collide in the Quintinshill rail disaster near Gretna Green, Scotland, killing 227 people and injuring 246. Date: May 22, 1915 Read more on Wikipedia → 📅 Other events on May 22 📅 Events on this day in 1915 📅 On This Day (Today) More events from 1915RMS Lusitania Final Atlantic Crossing Departs New…