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,
Samuel A. Tannenbaum work of Sir Edward Maunde Thompson and his collaborators. Tannenbaum also was deeply involved on the question of the forgeries of John Payne Collier. He believed the entire account book of the Office of the Master of the Revels was a Collier forgery—a view that has found no other defenders, though several other scholars, such as Charlotte Stopes, argued that the Revels accounts book was a partial forgery. He was also convinced that Simon Forman's "Book of Plays" was a Collier forgery, a position that only a minority of commentators support. Samuel A. Tannenbaum Samuel Aaron Tannenbaum (1874–1948) was a