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 also published a major series of bibliographies on significant Elizabethan and Jacobean figures that were important scholarly resources in their era. His second wife, the former Dorothy Rosenzweig (married 1942), collaborated with him on some of his later publications. As an amateur or self-taught palaeographer, Tannenbaum took positions and presented arguments on issues involving this area of Shakespeare studies, burgeoning at the time—though he often ended up on the side opposite the evolving scholarly and critical consensus. He was intensely skeptical of the view that Shakespeare contributed to the revision of the play "Sir Thomas More," and argued against the