"June 6, 1944, is the most famous single day in all human history." Those are the words of Garrett Graff in his author's note in his book "When the Sea Came Alive." This month is the 80th anniversary of the Normandy landing in World War II. As Graff introduces the reader to his oral history of D-Day, he writes: "The official launch of Operation Overlord, the long-anticipated invasion of Western Europe, marks a feat of unprecedented human audacity. A mission more ambitious and complex than anything ever seen, before or since, and a key turning point in the fight for a cause among the most noble humans have ever fought." Learn more about your ad choices. Visit megaphone.fm/adchoices