War, love, dragons

Prince Archibald hates wars, politics and in general to be a prince. He was horrified to be tired of his father, who will never be pleased with his youngest son, so unlike the eldest who died in the war. Prince Archibald wants one - to be needed and escape from the palace with his beloved girl.
But what will turn around when it turns out that his beloved is a dragon? In a world where a World War II thundered one hundred and twenty years ago, after which all countries are obliged to destroy dragons and half -bloods. The prince will not only make the most difficult choice in his life, but also find out the truth about himself. Who is he really? Why does a dragon hardening blade glow from his blood? And why did the father hide the whole truth from the youngest son?