hardest thing Canada had to deal with in WW2

I think the hardest thing Canada had to deal with in WW2 was the raid at Dieepie because Canada lost 916 men also many more were injured. the raid was very poorly planed out when the Canadians arrived the french alardy were per pared for them because the timing was off and the french saw the canadains out at sea. Also the tracks on the tanks did not work well on the beach and the tanks could hardly move. The raid started at 5 am and by 1050 am Canada had to retreat.