Chemical weapons in World War I volatile oily liquid. It was introduced as a vesicant by Germany in July 1917 prior to the Third Battle of Ypres. The Germans marked their shells yellow for mustard gas and green for chlorine and phosgene; hence they called the new gas "Yellow Cross". It was known to the British as "HS" ("Hun Stuff"), and the French called it "Yperite" (named after Ypres). Mustard gas is not an effective killing agent (though in high enough doses it is fatal) but can be used to harass and disable the enemy and pollute the battlefield. Delivered in artillery shells, mustard gas was
Tomb of the Known Soldier Tomb of the Known Soldier The Tomb of the Known Soldier is a grave site in Myrtle Hill Cemetery in Rome, Georgia (United States) dedicated to a soldier killed in World War I, Private Charles Graves. Charles Graves enlisted in the United States Army on August 16, 1917; he was eighteen years old at the time. He was eventually shipped to Neuroy, France, a place he knew nothing about. On October 5, 1918 (fourteen months after his Army service began), Graves was killed by German artillery shrapnel on the Hindenburg Line. Soon after, he received full military honors and a