It’s a bit weird after reading all those tales of derring-do on the Allied side, but here goes - might add that I’m a Dane (although I live in California):
My paternal grandfather was German, but apprenticed as a goldsmith in Denmark, where he met my grandmother. They married and settled in Prague some time before WWII, which turned out to be a really bad plan. When Czechoslovakia was overrun by the nazis, being a German (or being married to one) was not a good thing. As the war turned sour for the nazis, my grandfather - then in his forties and a father of two - was drafted. Refusing was not really an option, but due to his mountaineering skills, he somehow managed to get himself assigned to an alpine regiment and was shipped off to Greece.
He promptly surrendered to the British first chance he got and spent the rest of the war in a POW camp in Italy. His only friend from WWII - Richard - was a British soldier. (They’d exchange Christmas cards and goodies - plumcakes etc. from from Richard, Weihnachtsstollen and the like from my grandfather’s family - until the gentlemen passed away.)
My grandmother was left in Prague with two young children and an unsure future. She managed to get travel permission to Denmark to show her parents their grandson (my father) - and she rescued some valuables at the same time. With the Russian army approaching, she struck out, kids in tow, to try to make it as far west as possible. She made it to British occupied territory, heaven knows how. Through one of those weird coincidences in war, she actually ran into my grandfather by accident. Luckily, they were allowed to settle in Denmark, where they lived for rest of their lives.
My maternal grandfather was a bit younger and was mortified that Denmark surrendered as easily as was the case. He managed to get involved in resistance work - he’d be part of a group that received clandestine weapons drops from British aircraft. They’d listen for coded messages in the BBC newscasts (listening to the BBC was in itself a criminal offense), then break curfew to go out to a remote clearing where - hopefully - a bomber would show up to drop containers of weapons and explosives. Then race against time to retrieve the containers, bury the parachutes (Pure silk - and in wartime!) and get the weapons to an arranged drop-off point where someone else (whose face or name you didn’t - couldn’t - know) would take over. Pretty dangerous stuff, not to say difficult. Gasoline was heavily rationed, trucks couldn’t just drive wherever without papers, and simple mistakes (like smelling of weapons grease) could give you away.
Neither of my grandfathers spoke of the war. My maternal grandfather was, however, proud fit to burst when I joined the armed forces, something he’d never had the option to do.