Operation Tannenbaum | |||||||
---|---|---|---|---|---|---|---|
Part of World War II | |||||||
German plans for the invasion, occupation, and/or annexation of Switzerland & Liechtenstein, dated 1940 and March 1944 | |||||||
| |||||||
Belligerents | |||||||
![]() ![]() ![]() |
![]() ![]() |
Operation Tannenbaum ("Fir Tree"), known earlier as Operation Grün ("Green"),[1] was a planned invasion of Switzerland and Liechtenstein by the Axis Powers during World War II.