Hitler decided to have Germany conquer Poland. This was a swift and easy defeat since Poland still had soldiers on horseback while Germany had tanks.
Waiting until the spring of 1940, Hitler launched an attack on Denmark and Norway. This was almost effortless for the Germans because both countries were conquered easily. The wins for Germany secured the North Sea for future campaigns.
After obtaining the North Sea, Adolf Hitler decided it was the best time to go after France. They went through Belgium where they trapped Allied troops at the English Channel.
The Germans showed little mercy under control of Hitler as they marched through the Ardennes Forest. This was a smart military decision because Allied forces were expecting an invasion from the direct north. A majority of France was conquered and the rest was supported by the French governors who supported Hitler.
During the war, anti-Semitism was Hitler's prerogative. Starting on November 9 and 10, anti-Jewish riots rang out in Germany. It was called Kristallnacht. Soon after, many Jews were put into ghettos. This lead to a plan known as the Final solution which was a mass genocide of the Jewish people. Many were taken to concentration camps and killed for any reason. These camps were terrible and most people died.
Hitler's hatred toward the Jewish people caused a 63% decrease in the Jewish population in Europe. While the rest of the world viewed this as heinous and murderous, Adolf Hitler believed it was righteous and just.