National Redoubt (Switzerland)
The Swiss National Redoubt is a defensive plan developed by the Swiss government beginning in the 1880s to respond to foreign invasion. In the opening years of the Second World War the plan was expanded and refined to deal with a potential German invasion. The term "National Redoubt" primarily refers to the fortifications begun in the 1880s that secured the mountainous central part of Switzerland, providing a defended refuge for a retreating Swiss Army.
Plan of the defence lines of the National Redoubt[citation needed]
Camouflaged cannon beside the Lago di Lucendro. It has a 105 mm calibre and fires up to range of 17 kilometres (11 mi).
Camouflaged infantry fortification in Sufers (machine gun bastion left, antitank gun right, housing, and connecting tunnel)
Fort Airolo
Operation Tannenbaum, known earlier as Operation Grün ("Green"), was a planned invasion of Switzerland and Liechtenstein by the Axis Powers during World War II.
Image: Durchmarschpläne IMG 1701
Image: Planheft Schweiz
Image: Durchmarschpläne IMG 1701
Image: Planheft Schweiz