which gas was used by the Germans against the English for the first time on January 2nd 1915.I've googled chlorine but that was in April 1915 Mustard gas was later and bromide xylyl was earlier only need this one .any help please thanks in advance
chlorine?" According to the fieldpost letter of Major Karl von Zingler, the first chlorine gas attack by German forces took place before 2 January 1915"