"D-Day veterans George Krakosky, left, and Herman Zeitchik, right, attend a wreath-laying ceremony at the National World War II Memorial on Monday, June 6. D-Day was the largest amphibious invasion in history. On June 6, 1944, more than 160,000 Allied troops -- about half of them Americans -- <a href=""http://www.cnn.com/2012/06/05/world/gallery/d-day/index.html"" target=""_blank"">invaded Western Europe,</a> overwhelming German forces in an operation that proved to be a turning point in World War II."
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