In the course of the war, detailed invasion plans were drawn up by the German military command,[7] such as Operation Tannenbaum, but Switzerland was never attacked. Switzerland was able to remain independent through a combination of military deterrence, economic concessions to Germany, and good fortune as larger events during the war delayed an invasion. Attempts by Switzerland's small Nazi party to effect an Anschluss with Germany failed miserably, largely as a result of Switzerland's strong …show more content…
Each side openly exerted pressure on Switzerland not to trade with the other. Economic cooperation and extension of credit to the Third Reich varied according to the perceived likelihood of invasion, and the availability of other trading partners. Concessions reached their zenith after a crucial rail link through Vichy France was severed in 1942, leaving Switzerland completely surrounded by the Axis. Switzerland relied on trade for half of its food and essentially all of its fuel, but controlled vital trans-alpine rail tunnels between Germany and Italy. Switzerland's most important exports during the war were precision machine tools, watches, jewel bearings (used in bombsights), electricity, and dairy products. Until 1936, the Swiss franc was the only remaining major freely convertible currency in the world,[30] and both the Allies and the Germans sold large amounts of gold to the Swiss National Bank. Between 1940 and 1945, the German Reichsbank sold 1.3 billion francs worth of gold to Swiss Banks in exchange for Swiss francs and other foreign currency, which were used to buy strategically important raw materials like tungsten and oil from neutral countries.[25] Hundreds of millions of francs worth of this gold was monetary gold plundered from the central banks of occupied countries. A total of 581,000 francs' worth of "Melmer" gold taken from Holocaust victims in eastern Europe was sold to Swiss banks.[25] In total, trade between Germany and Switzerland contributed about 0.5% to the German war effort and did not significantly lengthen the