Operation Tannenbaum Operation Tannenbaum Operation "Tannenbaum ("Fir Tree"), known earlier as Operation "Grün ("Green"), was a planned but cancelled invasion of Switzerland by Nazi Germany and Italy during World War II. For tactical reasons, Adolf Hitler made repeated assurances before the outbreak of the Second World War that Germany would respect Swiss neutrality in the event of a military conflict in Europe. In February 1937, he announced that "at all times, whatever happens, we will respect the inviolability and neutrality of Switzerland" to the Swiss federal councillor Edmund Schulthess, reiterating this promise shortly before the Nazi invasion of Poland. These were, however,
Christmas Extraordinaire Christmas Extraordinaire Christmas Extraordinaire is Mannheim Steamroller's sixth Christmas album overall and the group's fourth Christmas studio album. The album was originally released in 2001. The song "O Tannenbaum" features a lead vocal by Johnny Mathis. Five of the album's tracks were included in the group's 2004 compilation "Christmas Celebration". On June 21, 2004, "Christmas Extraordinaire" was certified Triple Platinum by the Recording Industry Association of America for shipment of three million copies in the United States. As of November 2014, "Christmas Extraordinaire" is the fourteenth best-selling Christmas/holiday album in the U.S. in the Nielsen SoundScan era of music sales