For the German soldier fighting under Hitler, keeping a diary was strictly forbidden. So Gunter Koschorrek, a fresh young recruit, wrote his notes on whatever scraps of paper he could find and sewed the pages into the lining of his winter coat. Left with his mother on his rare trips home, this illicit diary eventually was lost--and did not come to light until some 40 years later when Koschorrek was reunited with his daughter in America. It is this...