This is a spectacular account of the events leading up to and through the Allied Forces' invasion of Normandy, France on D-Day (June 6), 1944 to fight the occupying Germans. The film is particularly interesting because it looks at D-Day through the eyes of all of the participants, including the Germans, who are overwhelmed by the forces brought against them. It is in fact a German officer who gives the story its title -- when he views the approaching Allied armada, he says, "This will be the longest day."