Help, who knows something about Denmark occupied by Germany during World War II?

When the war started, Denmark did not surrender. After all, the royal family is in exile in Britain, and the whole country has not surrendered. In addition, Germany feels that the Danish nation, like itself, is still good to Denmark, but Danish nationals directly joined the German army. As you can imagine, the war damage in Denmark is not high. Sadly, those Danes who joined the German army were convicted of treason after the war.

It is said that Germany is very kind to the Nordic countries. First, Hitler thought they were a nation and brothers, and their policies were relatively loose. Another point is that after World War I, many German children were adopted by families in Nordic countries (mainly Norway) for ethnic reasons, and they treated their children as if they were their own families. After these German soldiers occupied northern Europe, they basically went home, and even had a good time at their adoptive parents' home, so the discipline of junior officers and men was amazing. In short, the Nordic countries have not suffered any crimes.