Hitler was the notorious leader of the Nazi Party during World War II, actively promoting fascism, ultra-nationalism, anti-communism, anti-capitalism, anti-Semitism, was the initiator of World War II, and killed 6 million Jews.

After the gunshots of World War II, Nazi Germany occupied many countries in a lightning posture, conquered Poland in 27 days, occupied Denmark in only 1 day, captured Norway in 23 days, flattened the Netherlands in 5 days, and defeated France, known as "the strongest army in Europe", within 39 days.
The Nazi German army was invincible in the early stages of World War II, thanks to the "Blitzkrieg" war model created by Heinz Wilhelm Guderian, known as the "Eagle of the Empire", under the organization and promotion of Guderian, Germany established the most efficient armored unit at that time, and took full advantage of the rapid advantages of aircraft, tanks and mechanized troops, and unexpectedly attacked them to win.
In addition to excellent tactics, Germany also needed enough troops to win the battle, bearing in mind that from 1939 to 1941, Hitler's Nazi Germany occupied 14 European countries and turned Romania, Hungary, Bulgaria, and Yugoslavia into its own vassal states.
Relying on German soldiers alone, Hitler could not achieve this, and his ally Italy was not intoxicated with war, often surrendered on the battlefield, "dropped the chain", Hitler therefore recruited foreign legions to serve himself, perhaps many people will find this method more ridiculous, but Spain has about 18,000 people recruited, so the formation of the famous "Blue Division". 、
During World War II, Spain remained neutral, did not participate in the war, and did not spread the war to Spanish territory, but why did Spain provide military support for Germany? This is related to Francisco Franco, the head of state of Spain at the time.
Franco had received help from Hitler, so he helped Hitler invade the Soviet Union in World War II, and also agreed that the Blue Division could only fight against the Soviet Army, and Hitler's treatment of the Blue Division was also very good.
In late March 1942, the Blue Division was once again engaged in operations east of the Wohlhof River, and after three months of fighting, the Blue Division captured 5,097 Soviet troops and captured 46 artillery pieces, while the Blue Division lost 274 men.
But Germany was eventually defeated in the Soviet-German battlefield, the defeat was decided, Hitler sent all the Blue Division back to Spain before committing suicide, and these Spanish soldiers and German soldiers still enjoyed the same treatment, and the German government was still abiding by this order after the end of World War II, until the death of these Spanish veterans who had been the Blue Division, while Japan, which was also fascist, did something completely different from Germany.