From Wikipedia: "Denmark in World War 2"
At the outset of World War II, Denmark declared itself neutral. For most of the war, the country was a protectorate, then an occupied territory of Germany. The decision to occupy Denmark was taken in Berlin on 17 December 1939. On 9 April 1940, Germany occupied Denmark in Operation Weserübung and the king and government functioned as normal in a de facto protectorate over the country until 29 August 1943, when Germany placed Denmark under direct military occupation, which lasted until the Allied victory on 5 May 1945. Contrary to the situation in other countries under German occupation, most Danish institutions continued to function relatively normally until 1945. Both the Danish government and king remained in the country in an uneasy relationship between a democratic and a totalitarian system until the Danish government stepped down in a protest against the German demands to institute the death penalty for sabotage.Just over 3,000 Danes died as a direct result of the occupation. (A further 2,000 volunteers of Free Corps Denmark and Waffen SS, of which most originated from the German minority of southern Denmark, died fighting on the German side on the Eastern Front while 1,072 merchant sailors died in Allied service.) Overall this represents a very low mortality rate when compared to other occupied countries and most belligerent countries. (See: World War II casualties.)
An effective resistance movement developed by the end of the war, and most Danish Jews were rescued in 1943 when German authorities ordered their internment as part of the Holocaust.
So Denmark didn't want to oppose the Nazis in WWII? Wanted to sit it out.
Denmark should have been required by the U.S. to forfeit their custodianship of Denmark at war’s end. Denmark was, and probably still is, unreliable.