The Germans didn’t face Britain’s best general imho. Bill Slim was sent to fight the Japanese in Burma. He was wasted in that sideshow theatre.
Not wasted, I think, simply underappreciated. Slim's performance was crucial to the winning of the Pacific war. His is the name I mention when I'm asked who was the best British general of WWII.
Hitler's own nationalism was a very peculiar thing, not toward any past or existing German nation but toward an entirely fictional Aryan mythos whose proper place is on the opera stage. It is often noted that you have to strain to find any Blond Beasts within Hitler's inner circle - tragic, I think, that the most destructive war in human history was informed by a fairy tale.