Germany seriously considered invading Switzerland in 1940 and plans were drawn up. Operation Tannenbaum: https://en.wikipedia.org/wiki/Operation_Tannenbaum http

Germany seriously considered invading Switzerland in 1940 and plans were drawn up. Operation Tannenbaum: https://en.wikipedia.org/wiki/Operation_Tannenbaum https://en.wikipedia.org/wiki/Operation_Tannenbaum