What a load of guff in here, pre war Switzerland traded arms with the West, when war broke out most of it flipped over to Germany, aided by Germany's threat to cut coal exports, and that Italy had entered the war and presented a risk to its border. They were also the clearing house for a lot of German gold, in exchange for SwissFrancs which allowed them to buy war materials, they even loaned them 850M Sfr because they were pissed at the Americans freezing their assets.
The German military had drawn up a few potential plans for invasion like “Operation Tennenbaum” and “Case Switzerland”, but Hitler was tied up with Russia and then D-Day happened.
It also had little strategic value, but figured in his long term plans for a reunification of a Greater Germany
Germany had just taken a dump on Europe's largest army, France; so a few cow farmers with rifles and no air cover wasn't going to do much.
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