{"id":1004,"date":"2015-06-03T06:35:38","date_gmt":"2015-06-03T06:35:38","guid":{"rendered":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/?p=1004"},"modified":"2026-04-22T15:22:23","modified_gmt":"2026-04-22T15:22:23","slug":"poison-gas-in-world-war-i","status":"publish","type":"post","link":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/poison-gas-in-world-war-i\/","title":{"rendered":"Poison Gas in World War I: A Detailed Summary"},"content":{"rendered":"\n

Poison gas was a devastating\u00a0weapon in World War I<\/a>\u00a0and played a significant role in the events of the\u00a0First World War.\u00a0 In fact, poison gas was used throughout the war as a means of trying to end the stalemate that resulted from\u00a0trench warfare<\/a>.\u00a0 Soldiers from all sides feared the effects of the gas and tried to protect themselves from its deadly outcome. World War I was a deadly conflict as shown by the millions of military and civil casualties it caused.\u00a0 The large number of casualties was the result, in part, of the development and use of weaponry that took place during the war.\u00a0 In all, poison gas was one of the most significant weapons of World War I<\/a> alongside other important weapons, such as:\u00a0airplanes<\/a>,\u00a0airships<\/a>,\u00a0machine guns<\/a>,\u00a0rifles<\/a>,\u00a0submarines<\/a>, and\u00a0tanks<\/a>.\u200b<\/p>\n\n\n\n

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DEVELOPMENT OF POISON GAS IN WORLD WAR I<\/h2>\n\n\n\n

World War I, especially on the\u00a0Western Front<\/a>, was known for the stalemate conditions of trench warfare.\u00a0 Essentially, the trench systems created excellent conditions for the defending armies, which meant that there was very little movement by either the\u00a0Allied Powers<\/a>\u00a0or the\u00a0Central Powers<\/a>.\u00a0 As a result, the major nations of World War I sought to find new weapons and strategies in an effort to end the stalemate and break through the enemy lines.\u00a0 The development and use of poison gas in World War I was related to this, as it was seen as a way to potentially break the stalemate.\u200b<\/p>\n\n\n\n

In reality, the use of poison gas had been deemed a \u2018war crime<\/a>\u2019 since before World War I.\u00a0 In fact, the Hague Conventions<\/a> of 1899 and 1907 at The Hague in the Netherlands, established several \u2018laws of war\u2019.\u00a0One such agreement was against the use of poison weapons in warfare.\u00a0 As such, the use of poison gases in World War I was highly controversial and led to a great deal of public outrage.\u00a0 Regardless, countries expanded their use of poison gases during the war as a means of overcoming their enemies.\u00a0 In fact, the armies of World War I used several different forms of poison gas throughout the war.\u200b<\/p>\n\n\n\n

\"Poison
‘Gassed’ by John Singer Sargent (1918)<\/figcaption><\/figure>\n\n\n\n
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TYPES OF POISON GAS IN WORLD WAR I<\/h2>\n\n\n\n

Tear Gas<\/strong> \u2013 This was the most commonly used type of gas in World War I.  In general, tear gas was any chemical that caused the soldiers to produce tears.  For instance, several different types of chemicals were used in World War to create tear-causing gases.  The purpose of tear gas was to affect the enemy\u2019s vision and force them to retreat from their positions.\u200b<\/p>\n\n\n\n

Chlorine Gas<\/strong> \u2013 This was the first type of poison gas used on the battlefield of World War I and led to many early casualties on the Western Front.  Chlorine gas worked by entering the soldier\u2019s airway and causing inflammation in the soldier\u2019s airway and lungs.  As such, this led to the soldier struggling to breathe.  In general, soldiers who died from Chlorine gas died due to a lack of air.  It also caused damage to the eyes and was known to blind soldiers.  Chlorine gas was visible as a greenish cloud and most soldiers lacked the proper gas masks when it was initially used.\u200b<\/p>\n\n\n\n

\"Poison
Excerpt of Wilfred Owen poem ‘Dulce et Decorum Est’<\/figcaption><\/figure>\n\n\n\n
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Phosgene Gas<\/strong> \u2013 This was another type of poison gas used in World War I.  Phosgene gas was similar to chlorine gas in that it inflamed the soldier\u2019s airway and lungs and generally caused people to die from a lack of air.  However, phosgene gas differed from chlorine gas in that it was not visible and it was generally odourless.<\/p>\n\n\n\n

This meant that soldiers who were attacked with phosgene gas usually did not know they were breathing in the deadly gas.  As such, soldiers in World War I would often take a bit of time before they put on their gas masks, causing them to breathe in large quantities of the gas.  It was also heavier than air, and settled deep into the bottom of the trenches, where soldiers were hiding for protection.  In fact, approximately 85% of all poison gas deaths from World War I were the result of phosgene gas.\u200b<\/p>\n\n\n\n

Mustard Gas<\/strong> \u2013 This was a devastating form of poison gas from World War I.  Unlike chlorine and phosgene, gas masks were not effective against mustard gas since it also affected the surface of the skin.  Soldiers who were exposed to mustard gas experienced burning of the skin, blisters, swelling of the eyes and choking.  With that said, while mustard gas caused the injuries described above it rarely led to death.  It was also heavier than air, and often settled into the deep parts of the trenches, where soldiers hid, slept and laid injured.<\/p>\n\n\n\n

\"Poison
A French gas attack on German trenches in World War I. (Colorized by historycrunch.com)<\/figcaption><\/figure>\n\n\n\n
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HISTORY OF POISON GAS IN WORLD WAR I<\/h2>\n\n\n\n

There were several different types of poison gases used on the battlefields of\u00a0World War I, and not all were deadly.\u00a0 In fact, the most commonly used type of gas in World War I was \u2018tear gas\u2019.\u00a0 Several different chemicals were used to create tear gas, however they all caused the eyes to become irritated and produce tears.\u00a0 The French Army first used tear gas in August of 1914, when they launched 26 mm grenades filled with ethyl bromoacetate.\u00a0 However, the French<\/a> used so little of the gas in each grenade that was barely noticed by the Germans.\u00a0 The first large-scale attack that made use of tear gas was carried out by the German Army in late January of 1915.\u00a0 This saw the Germans<\/a> use it against Russian Forces in the Battle of Bolimov.\u200b<\/p>\n\n\n\n

However, World War I is famous today for the terrible effects of the lethal poison gases that were used.\u00a0 For instance, chlorine gas was the first lethal poison gas that was used in World War I.\u00a0 Chlorine gas was first used by the Germans against Allied soldiers in April of 1915 during the\u00a0Second Battle of Ypres<\/a>\u00a0and immediately had a devastating effect on soldiers in the trenches.\u00a0 It caused soldiers to choke and suffocate as their lungs became inflamed from the gas.\u00a0 In fact, the greenish plumes of chlorine gas sent waves of fear throughout the ranks of the Allied soldiers at Ypres and caused them to scramble for safety.\u00a0 The effects of chlorine gas were quick and deadly.\u00a0 In fact, soldiers essentially died from asphyxiation, which was a lack of oxygen.<\/p>\n\n\n\n

\"Canada
Canadians injured in a German artillery barrage on Allied lines during the Second Battle of Ypres. (Colorized by historycrunch.com)<\/figcaption><\/figure>\n\n\n\n
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As it was the first use, soldiers were unprepared for its effects and did not have gas masks to protect themselves.\u00a0 Some soldiers in World War I were known to urinate on rags and cover their faces with the rags in an attempt to prevent the gas from entering their airway.\u00a0 While the German use of poisonous gas was criticized heavily in the Allied nations, it would eventually become a weapon used by both sides in World War I<\/a>.\u00a0 As well, as the war progressed, soldiers were supplied with proper gas masks or gas hoods to help prevent the devastating effects of the gas.\u00a0 Gas masks and other measures made chlorine gas much less effective, and led the armies of World War I to search for a new and more deadly form of poison gas.\u200b<\/p>\n\n\n\n

After the initial uses of chlorine gas, a new type of poison gas saw use by both sides in the battlefields of World War I.  It was called phosgene gas and it was more deadly than chlorine gas.  It caused soldiers to cough less at first which allowed the gas to be inhaled more readily, thus making it even more poisonous to men in the trenches.  As well, unlike chlorine gas, phosgene was not visible, making it more likely that soldiers inhaled it before securing their gas masks.\u200b<\/p>\n\n\n\n

Phosgene gas was first developed and used by France in 1915, but it became widely used by all of the most powers in World War I.  Furthermore, phosgene gas was often combined with chlorine gas because it helped it to travel and linger in the enemy trenches.  The overwhelming majority of deaths in World War I from poison gas were from phosgene gas.  In fact, historians estimate that about 85% of all poison gas related deaths in the war were a result of phosgene gas.<\/p>\n\n\n\n

\"Poison
Germany used chlorine gas during the Second Battle of Ypres in World War I in 1915. (Colorized by historycrunch.com)<\/figcaption><\/figure>\n\n\n\n
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The last significant poisonous gas that saw use in World War I was mustard gas, which the German forces first introduced into the battlefields of the war.\u00a0 The German Army used it extensively in the war from the battlefields of Ypres and the Third Battle of Ypres<\/a> to conflicts against Russian soldiers on the Eastern Front<\/a>.\u00a0 As stated above, mustard gas was different from chlorine and phosgene in that gas masks were not effective since it also affected the surface of the skin.\u00a0 Soldiers who were exposed to mustard gas would experience burning of the skin, blisters, swelling of the eyes and choking.\u00a0 With that said, while mustard gas caused the injuries described above it rarely led to death.\u00a0 However, victims of mustard gas attacks, suffered a terrible and painful fate.\u00a0 This is because mustard gas caused terrible blistering of the skin and the mucous membranes in the airway.\u00a0 While it was not necessarily the most deadly poison gas from World War I, it did capture the public\u2019s attention and many opposed its use in the war.<\/p>\n\n\n\n

\"Trenches
Australian soldiers with small box respirator gas masks during the Third Battle of Ypres in World War I. (Colorized by historycrunch.com)<\/figcaption><\/figure>\n\n\n\n
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SIGNIFICANCE OF POISON GAS IN WORLD WAR I<\/h2>\n\n\n\n

\u200bIn the end, poison gas was an important weapon that had a significant impact on the nature of war in World War I.  For instance, historians estimate that as many as 90,000 soldiers died from poison gas in the war.  Most of these deaths occurred in the early years of the war, because as the war progressed the different armies developed their own countermeasures.  For instance, as the war continued the poisonous gases lost their overall impact due to the introduction of the gas mask in 1916.  Regardless, poison gasses still proved significant due to the number of casualties that were created.  For instance, historians estimate that as many as 1.3 million casualties resulted from the use of poison gas in World War I.  Common injuries suffered by the casualties of poison gas included: temporary blindness, difficulty breathing, blisters, etc.<\/p>\n\n\n\n

\"Poison
Canadian soldier suffering from Mustard Gas burns in 1918. (Colorized by historycrunch.com)<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Poison gas in World War I played an important role in the lives of the soldiers in the trenches. In all, there were four main types of poison gas used in World War I, including: tear gas, chlorine gas, phosgene gas and mustard gas.<\/p>\n","protected":false},"author":1,"featured_media":1640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":33,"footnotes":""},"categories":[19],"tags":[15,20],"class_list":["post-1004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-world-war-i","tag-history","tag-world-war-i"],"_links":{"self":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/1004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/comments?post=1004"}],"version-history":[{"count":6,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/1004\/revisions"}],"predecessor-version":[{"id":10246,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/1004\/revisions\/10246"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media\/1640"}],"wp:attachment":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media?parent=1004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/categories?post=1004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/tags?post=1004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}