By the end of World War II much of Western Europe was in chaos. The future of our world had been contested here, in the hinterlands of France and across the German plains. But what's become of the battlefields now? Or the people that lived on them? And is there any trace of the 2.7 million Americans who smashed their way into the Reich (or the 12 million that followed)? With questions like these, the award-winning travel writer John Gimlette, guided by WWII veteran Putnam Flint, sets off on an astonishing journey into the past.