<a href="https://en.wikipedia.org/wiki/Denmark_in_World_War_II" id="mwAQE" rel="mw:WikiLink" title="Denmark in World War II">Denmark in World War II</a>: German authorities demand that Danish authorities crack down on acts of resistance. The next day, <a href="https://en.wikipedia.org/wiki/Martial_law" id="mwAQI" rel="mw:WikiLink" title="Martial law">martial law</a> is imposed on Denmark.