Watch the first of these never-before-seen D-Day videos in stunning 4K

While 4K video was far from the technology of the day, the people over at AARP pulled out all the stops to get the legendary footage of history's largest amphibious landing into the viewing technology of today. Narrated by acclaimed actor Bryan Cranston, the video series presents the personal letters and feelings of the men who landed on the beaches of Occupied France that day.

The first in the series, "Landing on Omaha Beach," is the story of the landing through the eyes of Pfc. Dominick Bart, a 32-year-old infantryman who landed on the beach during the first wave. Cranston brings Bart's experiences alive as he reads about the Private First Class' experience on the beaches in Bart's letter to his wife, Mildred.

Omaha was just one of five Allied sectors invaded that day, and one of two that would fall to the American invasion forces. Omaha's principal challenge was the 150-foot cliffs overlooking the beach, from which Nazi guards rained death on the invaders.

Some 43,000 men assaulted Omaha Beach alone that day, and by 7:30 in the morning had managed to get through the beach to the cliffs. A half hour later, 900 American GIs were at the tops of the bluffs and assaulting the entrenched enemy positions. By 9:00 a.m., U.S. troops had cleared the beach and began moving inland. An estimated 2,000 - 5,000 men were killed and wounded in the assault on Omaha Beach alone, not to mention the four other sectors engaged by British and Canadian troops.

For the Americans, it was their finest hour.