I'm not going to go into details with this matter but focus on the key points.
During World War II, Switzerland was not actually attacked. Occasional incidents were absolutely insignificant in view of the dimensions of the Second World War. Incidents proceeded more frequently from British and American bombers than from Germany or Italy. Nevertheless German troops were regarded as a really serious threat. Unlike for other nations (for example Sweden), this threat was real, insofar as Hitler did have plans to incorporate all German-speaking regions into his empire (including 70% of Switzerland) and to integrate the rest of Switzerland (french and italian speaking areas) into France and Italy respectively.
Switzerland demonstrated military readiness with the general mobilization in 1939 and border occupation by 430,000 troops (20 % of the employed persons). However, their equipment was not very up to date. Eugen Bircher, a Swiss colonel at the time, probably made a correct assessment of the situation when saying that the Germans would have been able to advance towards the Swiss capital Berne with a single tank regiment easily.
Switzerland's commander in chief General Henri Guisan developped his famous "Reduit Concept" in summer 1940, according to which the Swiss Army would have retreated into the alps relatively soon if attacked, but would have kept up resistance based on some sort of guerilla tactics from there.
A sober look at the real balance of power between Germany and Austria vs. tiny Switzerland and the fact that France and Great Britain were not able to prevent Germany from occupying France in 1940 shows that Switzerland's Army (even backed up by Spiritual Defense) had absolutely no chance to withstand an attack and defend its borders.
Swiss people are probably living in a brainwashed world were they a piss in the ocean country resisted the big german monster with the help of their brave soldiers and the will to keep their democracy. That so much bullshit, maybe the easter-bunny and tooth fairy helped them and tingeling. They can twist and bend the words but here is why the Nazis didn't accupy Switzerland:
1. Train transports:
Transports of goods through Switzerland as such were based on normal pre- and post-war relations. Germany and Italy were heavily engaged in the construction of the Gotthard railway line in the 19th century and passage was based on the German-Italian-Swiss treaty of 1909, which regulated traffic until the end of the war. Transport of soldiers and weapons were officially forbidden. A BBC television report of 1997 presented an eye-witness saying she had seen a train carrying Jews to extermination camps at Zurich station in November 1943.
2. Refugee Politics
No comments to bad what Switzerland it's to descraceful to explain-
3. Looted Assets:
The Nazi regime in Germany forced many of their victims to sign orders for the transfer of their accounts and other assets with Swiss banks and insurance companies to German banks, where they would be confiscated. Swiss banks did not doubt these orders. This way they made it unnecessarily easy for the Nazis to loote their victims' assets.
4. Gold Transactions:
During World War II the Swiss National Bank (SNB) bought gold worth 1,212,600 million Swiss Francs from the German Reichsbank, which was far more than the gold reserves of the Reichsbank had amounted to before the war. The gold sold by the German Reichbank was either stolen from national banks in occupied countries, especially Belgium, the Netherlands and Luxembourg, and other gold was stolen from people the Nazis had murdered.
Switzerland's Federal Government granted generous credits to Germany and Italy under the terms of the clearing agreements and offered them financial privileges. Swiss art-dealers were involved in disreputable trade with stolen objects of art.
Some of the victims of holocaust had accounts in Switzerland, but under these tragic circumstances surviving heirs were not easily able to know whether there was any account at all and exactly with which bank institute in Switzerland. After the war, Swiss bankers generally declared account of people that did not reply to letters or send letters to the bank with exact reference to the account number as "dormant accounts". This fact alone is a standard procedure not worth commenting. The problem is, that bankers were not very cooperative with surviving heirs that tried to find the accounts of their relatives. Only in the debate about Switzerland and World War II after 1995, they were willing to publish a list of dormant accounts and to cooperate.
So you tell me why Switzerland wasn't occupied during the 2nd world war?