World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. Major areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. The war saw important developments in weaponry including tanks, aircraft, artillery, machine guns, and chemical weapons. One of the deadliest conflicts in history, it resulted in an estimated 15 to 22 million military and civilian casualties and genocide. The movement of large numbers of people was a major factor in the deadly Spanish flu pandemic.
World War I: The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Se
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.
On April 22, in the year 1915, 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. This event is recorded as a Historical Events event in the history of April 22, one of 297 recorded events on this date across all of history.
Key Facts
- This event took place on April 22, 1915 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 5 Wikipedia articles.
- Wikipedia source last updated on 21 April 2026.
On This Date in History 297
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
More on April 22
At least 26 people are killed in a terrorist attack on a group of tourists in Pahalgam, Jammu and Kashmir
At least 26 people are killed in a terrorist attack on a group of tourists in Pahalgam, Jammu and Kashmir. The Resistance Front (TRF), an offshoot of the Pakistan-based militant g…
Four police officers are killed after being struck by a truck on the Eastern Freeway in Melbourne while speaking to a sp
Four police officers are killed after being struck by a truck on the Eastern Freeway in Melbourne while speaking to a speeding driver, marking the largest loss of police lives in …
The Paris Agreement is signed, an agreement to help fight global warming
The Paris Agreement is signed, an agreement to help fight global warming.
Japan's Prime Minister Junichiro Koizumi apologizes for Japan's war record
Japan's Prime Minister Junichiro Koizumi apologizes for Japan's war record.
Eighteen-year-old Stephen Lawrence is murdered in a racially motivated attack while waiting for a bus in Well Hall, Elth
Eighteen-year-old Stephen Lawrence is murdered in a racially motivated attack while waiting for a bus in Well Hall, Eltham.
A series of gas explosions rip through the streets in Guadalajara, Mexico, killing 206
A series of gas explosions rip through the streets in Guadalajara, Mexico, killing 206.
Comments 0
Sign in to join the discussion.