The nickname 'Storm Troopers' isn't Hitlers, he reused/borrowed it; it relates to the Canadians or some of there forces who fourght hard in trenches of WW1, at Paschendael I think amongst other locations, where they excelling in trench clearences, fighting hand to hand in improvised close combat with tenacity and vigour to a man, driving off over whelming enemy attacks, and for operating in a slightly different manner to the British .
I'm sure some of the Canadian forum members will know better and correct me here