after a winter of waiting (called the "phony war"), Hitler resumed the attack on April 9, 1940, with another Blitzkrieg against Denmark and Norway. One month later Germany attacked Netherlands, Belgium, and France. French and British army were taken by surprise.
Hitler saw that he only way to control the sea was to control the air. In the beginning of august 1940 the Luftwaffe the German air force launched a major offensive. German planes bombed British air and naval base.
Hitler thought that Britain stayed in the war because they would have soviet support so they decided to attack Russia. Hitler believed it was going to be easy to invade Russia before winter hit. The massive attack stretched out along a front some 1,800 miles. German troops advanced quickly. Then winter hit and Germans didn't have winter cloths so it caused them to halt.
On December 7, 1941, Japanese aircraft attacked the U.S. naval base at Pearl Harbor in the Hawaiian Islands. That same day other Japanese units launched additional assaults on the Philippines and began advancing toward the British colony of Malaya.
Defeat was far from Hitlers mind at the beginning of 1942. As Japanese forces advanced into South Asia and the Pacific, Hitler continued fighting the war in Europe against the armies of Britain and Soviet Union. On the eastern front, after the capture of the Crimea, Hitler's generals wanted him to concentrate on the Caucasus and its oil fields. Hitler, however, decided that Stalingrad, a major industrial center on the Volga, should be taken first.
In 1942, the tide of battle in the East changed dramatically. In the battle of the Coral Sea on May 7 and 8, 1942, American naval forces stopped Japanese advance and saved Australia from the threat of invasion
At the beginning of 1943, the Allies agreed to fight until the Axis Powers- Germany, Italy, and Japan surrendered unconditionally.
The Germans set up effective new defensive lines in the hills of South Rome. the Allied advance up the Italian Peninsula turned into a painstaking affair with every heavy casualties. Hitler committed suicide on April 30, two days later after Mussolini had been shot by Italian partisans, or resistance fighters. On may 7, 1945 German commanders surrendered. The war in Europe was finally over.