Title	Gas attack
Description	Aerial photograph of a gas attack on the Western Front. The gas, released from canisters, can be seen streaming across no man's land.
Historical note	The French were the first to use gas on battlefield in World War I, employing tear gas against the Germans in August 1914. However, on April 22, 1915, the Germans opened the Second Battle of Ypres with an attack on French, Canadian, and British troops using chlorine gas, marking the first use of poison gas -- that is, gas designed to kill rather than to incapacitate -- on the Western Front. Mustard gas, nicknamed HS ("hun stuff") by the British and Yperite by the French, was used for the first time in 1917 in the fighting around Ypres . Delivery mechanisms advanced from simple canisters to the insertion of gas in artillery shells. Chlorine, phosgene, and mustard gases were those most widely used. The development of effective methods of protection greatly decreased the potential for gas casualties, but the use of poison gas in war was later outlawed in the 1920s by the Geneva Protocol.
Date	approximately 1918
Collection name	Karl Kleeman World War I Photographs
Collection finding aid	http://sos.tn.gov/products/tsla/kleeman-karl-m-world-war-i-photograph-collection-1914-1918
Accession number	2006-059
Education Tags	US.28 World War I
Subjects	Gas warfare Poisons War damage Campaigns & battles World War, 1914-1918
Owning Institution	Tennessee State Library and Archives
ID#	33128
Digital Type	Still Image
Digital format	Image/jp2
Media Type	Photographs
Copyright	While TSLA houses an item, it does not necessarily hold the copyright on the item, nor may it be able to determine if the item is still protected under current copyright law. Users are solely responsible for determining the existence of such instances and for obtaining any other permissions and paying associated fees, that may be necessary for the intended use.
Ordering Information	To order a digital reproduction of this item, please send our order form at http://tsla.tnsosfiles.com/general/forms/ImagingOrder.pdf to Photo Orders, Tennessee State Library & Archives, 403 7th Ave. N., Nashville, TN 37243-0312, or email to photoorders.tsla@tn.gov. Further ordering information can be found at the following location: http://sos.tn.gov/products/tsla/ordering-images-and-microfilm-digitization .