article_snippet.sent: Some 1,200 French soldiers were killed in the chaos of that first five-minute gas attack. '
article_snippet.sent: Fritz Haber, a chemical expert and future winner of the Nobel Prize in Chemistry, preached for more gas for more shock and awe. 
article_snippet.sent: The effect of the gas was enormous,' said historian Ann Callens. '
article_snippet.sent: Peshmerga forces discovered '20 gas canisters' loaded on the back of a truck involved in a suicide bomb attack in Iraq on January 23, officials said.
article_snippet.sent: The first use by Allied forces came in September, when the British unleashed poison gas on the Germans at the battle of Loos.
article_snippet.sent: Rival armies ultimately launched 146 gas attacks in Belgium, which covered only a small patch of the Western Front.
article_snippet.sent: More sophisticated gases were released and the improvement of gas mask designs led to more poison being deployed.
article_snippet.sent: the Germans used about 150 tons of gas in the Germans first attack and around 68,000 tons in total.
article_snippet.sent: The Allies used even more - 82,000 tons.
highlights_snippet.sent: German forces launched first attack using gas on April 22, 1915 .
  
highlights_snippet.sent: 150,000 tons of gas were used by German and Allied forces in WW1 .
  