The Canadian contribution is best represented by the battle of the Scheltd, where the Canadians faced tough German resistance in clearing out a group of small islands of the coast of Belgium and the Netherlands. These islands were strategically important because while they were under allied control, crucial supplies could not be brought in through the port of Antwerp. Anyways, after that Canada had a slow, methodical advance through most of the the Netherlands. Germany had been more focused on the allied armies set to strike across the rhine, so they didn't really put a lot of effort into defending the Netherlands. Hitler ordered Holland to be held at all costs, but he didn't really bother reinforcing the region so the troops there generally just retreated and allowed the Canadians to have the territory. The Canadians liberated the province of Zeeland, and the middle part of the country, and the city of Arnhem. (my Dutch geography isn't the greatest so I apologize if I'm mixing provinces up here) Eventually the Germans saw how hopeless the situation was and surrendered all of the Netherlands before it could be liberated. They probably could have liberated the province of Holland, but there was worries the Germans would blow the dykes and flood Amsterdam.