…and how would it have looked if they had?
Wiki gives an overview of the planned German invasion of Switzerland, Operation Tannenbaum and says “Hitler never gave the go-ahead, for reasons still uncertain today.”
What do you think those reasons were? Why wasn’t Switzerland incorporated into the Greater German Reich, as volksdeutsche? Sure they were neutral, but that didn’t protect Norway, the Netherlands, Belgium or Luxembourg. Hitler also had no love for the Swiss either, saying “Switzerland possessed the most disgusting and miserable people and political system. The Swiss were the mortal enemies of the new Germany.”
According to the Wiki somewhere between 300,000 and 500,000 Axis troops would have been involved in the operation, had it gone ahead. What would our history books say about it today if it had? Would it have been a cakewalk or a serious drain on the German military?
Is there anything to the idea that Switzerland was so different to the other European nations Germany had invaded that the Nazis decided it would be worth the casualties? For one thing, the Swiss had several hundred thousand of these, and knew how to use them. They also knew the mountainous terrain, terrain which favoured the defender and was harsh country for panzers. Henri Guisan is remembered today as the man who prepared to face the Nazis behind a ‘national redoubt’, and told the population to disregard any official surrender as nobody in Switzerland had the power to capitulate on behalf of all the Cantons.
TL;DR - why didn’t Adolf invade Switzerland and what would it have looked like if he had?