I would say amazingly interresting! Since i am from Norway myself and having a grandfather sailing the seven seas during WWII with a medal to show for it, i am a sponge for these types of reading! The Norwegians were a part of WWII in a bigger sense than most people (even norwegians) now. There were a lot of silent special operations going on that changed much of history! read this:
Norwegian heavy water sabotage - Wikipedia, the free encyclopedia