Ah ok, I honestly had no idea, or I just forgot, thanks! That actually is a great story.
I am going to give you a slight correction to the story however, as I'm a WW1 historian and I have been to this battlefield many times.
The first time the Germans used gas was at the 2nd battle of Ypres, Belgium. The Canadians had in fact recently taken over from the French in French trenches which were in a terrible state. When the gas attack came 2 medics in the Canadian lines knew it was chlorine gas and instructed the men to pee in their handkerchiefs and breathe through that, as the acidic urine would crystallize the chlorine gas. However to their left and right the French Colonial troops broke and ran.
Furthermore the rifle the Canadians used was the crappy Ross Rifle, as the politicians in Canada wanted a Canadian made rifle for the troops and not the fantastic British made Lee Enfield. The Ross rifle was prone to jamming and in the muddy trench conditions the rifle was constantly jamming. So you had a Canadian soldier breathing through a urine soaked hanky with one hand and firing this shitty rifle with the other, while his mate behind him was kicking the breech open with his foot unjamming the weapon and trying not to blow his head off in the process. The Canadians actually retreated but not after several counterattacks where they did win some ground back.
The famous Brooding Soldier statue near St Julien Belgium stands today as a commeroration of the battle and this battle also inspired the poem In Flanders Fields by John McCrae.
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The Canadians had a well earned fearsome reputation by the Germans, who always wanted to know where the Canadians were, as they knew that was where the main Allied attack would always come.
So how in the hell do you expect me to hate the Leafs anymore after a story like that?!?!?!?!