occupation Of Norway & Den Mark Adolf Hitler

After ordering the occupation of Norway and Denmark in April 1940, Hitler adopted a plan proposed by one of his generals to attack France through the Ardennes Forest. The blitzkrieg ("lightning war") attack began on May 10; Holland quickly surrendered, followed by Belgium.

German troops made it all the way to the English Channel, forcing British and French forces to evacuate en masse from Dunkirk in late May. On June 22, France was forced to sign an armistice with Germany.

Hitler had hoped to force Britain to seek peace as well, but when that failed he went ahead with his attacks on that country, followed by an invasion of the Soviet Union in June 1941.

After the attack on Pearl Harbor that December, the United States declared war on Japan, and Germany's alliance with Japan demanded that Hitler declare war on the United States as well.

At that point in the conflict, Hitler shifted his central strategy to focus on breaking the alliance of his main opponents (Britain, the United States and the Soviet Union) by forcing one of them to make peace with him.