In this image provided by the U.S. Signal Corps, Supreme Commander Dwight Eisenhower visits paratroopers of the 101st Airborne Division at the Royal Air Force base in Greenham Common, England, three hours before the men board their planes to participate in the first assault wave of the invasion of the continent of Europe, June 5, 1944. (AP Photo/U.S. Signal Corps)
British Prime Minister Winston Churchill, left, reviews American troops at a base in England on the eve of D-Day, June 1944, during World War II. The initials AAAO on the steel helmets with a line across the As stands for "Anywhere, Anytime, Anyhow, Bar Nothing." The identification shoulder patches of the G.I.s are blotted out by the censor. (AP Photo)
Destroyers and small naval craft patrol the Channel and protect ships carrying reinforcements in men and materials against the enemy in Normandy in June 1944. (AP Photo)
The 15-inch guns of warspite shelling German invasion coast positions on the Normandy coast on June 6, 1944. (AP Photo)
In this photo provided by the U.S. Army Signal Corps, U.S. paratroopers fix their static lines before a jump before dawn over Normandy on D-Day June 6, 1944, in France. The decision to launch the airborne attack in darkness instead of waiting for first light was probably one of the few Allied missteps on June 6, and there was much to criticize both in the training and equipment given to paratroopers and glider-borne troops of the 82nd and 101st airborne divisions. Improvements were called for after the invasion; the hard-won knowledge would be used to advantage later. (AP Photo/U.S. Army Signal Corps)
FILE - In this June 6, 1944 file picture, some of the first assault troops to hit the Normandy, France beachhead take cover behind enemy obstacles to fire on German forces as others follow the first tanks plunging through the water towards the German-held shore during World War II. (AP Photo)
U.S. infantrymen wade through the surf as they land at Normandy in the days following the Allies' June 1944, D-Day invasion of occupied France. An allied ship loaded with supplies and reinforcements waits on the horizon. (AP Photo/Bert Brandt)
In this photo provided by the British Navy, wounded British troops from the South Lancashire and Middlesex regiments are being helped ashore at Sword Beach, June 6, 1944, during the D-Day invasion of German occupied France during World War II. (AP Photo/British Navy)
U.S. assault troops, laden with equipment, wade through the surf to a Normandy beach from landing craft in June 1944 to support those who had gone before in the D-Day assault. (AP Photo)
A U.S. Coast Guard LCI, heavily listing to port, moves alongside a transport ship to evacuate her troops, during the initial Normandy landing operations in France, on June 6, 1944. Moments later the craft will capsize and sink. Note that helmeted infantrymen, with full packs, are all standing to starboard side of the ship. (AP Photo)
Les troupes canadiennes débarquent sur la plage de Courseulles en Normandie, le 06 juin 1944, au cours du fameux jour J de la seconde guerre mondiale au cours duquel 60.000 hommes, Américains, Britanniques, Canadiens et Français débarquèrent sur les côtes normandes. Canadian soldiers land on Courseulles beach in Normandy, 06 June 1944 as Allied forces storm the Normandy beaches on D-Day. D-Day, 06 June 1944 is still one of the world's most gut-wrenching and consequential battles, as the Allied landing in Normandy led to the liberation of France which marked the turning point in the Western theater of World War II. AFP PHOTO (Photo credit should read STF/AFP/Getty Images)
After landing at the shore, these British troops wait for the signal to move forward, during the initial Allied landing operations in Normandy, France, June 6, 1944. (AP Photo)
British Commando troops landing on the Normandy beachhead on D-day. British Commandoes advancing inland to gain the first Normandy village, on June 7,1944. (AP Photo)
In this photo provided by the U.S. Coast Guard, a U.S. Coast Guard landing barge, tightly packed with helmeted soldiers, approaches the shore at Normandy, France, during initial Allied landing operations, June 6, 1944. These barges ride back and forth across the English Channel, bringing wave after wave of reinforcement troops to the Allied beachheads. (AP Photo)
German prisoners of war are led away by Allied forces from Utah Beach, on June 6, 1944, during landing operations at the Normandy coast, France. (AP Photo)