Yea, there's a reason the Nazi's never tried invading... Today, every able male has an an assault rifle and is required to maintain their marksmanship - which

Yea, there's a reason the Nazi's never tried invading... Today, every able male has an an assault rifle and is required to maintain their marksmanship - which is a national past-time with +200m ranges in most towns. There are hidden underground airfields, people trained/armed to blow up tunnels at a moments notice. Add to that crazy terrain, weather, a homogeneous/close-knit population, a distributes governance structure, etc. - you get the one of the most defendable country's EVER!