The Longest Day — Cornelius Ryan

For the forces of the Allies, this would be their ultimate day of truth, when the mightiest invasion fleet in all of history launched its attack on the vaunted defenses of Hitler's Fortress Europe.

For Hitler and his generals, this would be their golden chance to smash their enemies to pieces, and once again have total victory within their grasps.

For both sides, for those who fought on the beaches and those who anxiously awaited the news at home, this would be -- THE LONGEST DAY