The War Memorial of St. Julien marks the place where Canadian soldiers withstood the first German gas attacks. These marked the beginning of the Second Battle of Ypres in 1915. St. Julien is situated near Langemark at the north east of the Ypres Salient. The Canadian forces were entrenched next to the French Colonial Troups, who suffered most casualties from the German chlorine clouds. This memorial in England lists the names of soldiers who died in the First World War. ... The Second Battle of Ypres was the first time Germany used chemical weapons on a large scale on the Western Front in World War I and the first time a colonial force (Canadians) forced back a major European power (Germans) on European soil. ... 1915 was a common year starting on Friday (see link for calendar). ... The Ypres Salient is the area around Ypres which was the scene of some of the biggest battles in World War One. ... General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ...