Not sure if I've told this story on here before - apologies if you've heard it.
During the war, my parents had a knock on the door. My Dad answered to be greeted by an American soldier who asked his name, and said "Hi - I'm your cousin". Turned out he was descended from my Dad's grandfather's sister who had left for the States in the 1880's after her husband's family farm had failed. As my Dad told it, I'm not sure there had been any contact since she left. They kept in touch, produced a family tree together (which started me off) and my parents later visited them in New York. From my research, the cousin was very likely to have been stationed at a base which was on, or adjacent to, his grandfather's family farm. Not sure if he knew.