during france progect the maginot line in Italy Mussolini project the Littoria line to italy alps for German attak to italy.
sorry wikipedia have only italian and german lenguagge for this document.
http://it.wikipedia.org/wiki/Vallo_Alpino_in_Alto_Adige
immagine if German during WW2 attak Italy from alps For German is very difficoult acces in italy.
Mussolini thought and imagined that France would resist the German attack but France has sold so Germany had annexed Austria and also threatened Italy.