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
Memorial Museum Passchendaele 1917 Day 2004. In 2007, during the commemoration of 90 years of the 'Third Battle of Ypres', the MMP1917 organised six thematic exhibitions who took place on different locations. There are also three trails created. In 2013 the restoration of the former vicarage is completed to be used as 'Kenniscentrum'. The main theme of the museum is the Third Battle of Ypres, also known as the Battle of Passchendaele. This was a major battle in 1917 during the First World War which was fought out by the British, Anzac and Canadian troops and the German army. The total loss of human