Norway was strategically important because of its sea routes which supplied crucial Swedish ore to the Nazi war machine .
Following the conquest of the Low Countries , Hitler occupied Denmark and Norway , beginning on April 9 , 1940 .
Norway was strategically important because of Norway 's sea routes which supplied crucial Swedish ore to the Nazi war machine .
Following the conquest of the Low Countries , Hitler occupied Denmark and Norway , beginning on April 9 , 1940 .