It's been 77 years since the event. It's history now, like Gettysburg or Waterloo.
But 37 years ago the battle was still part of living memory, the majority of veterans were in their 60s, still active and capable of attending a reunion or being interviewed.
Here's a British documentary made in 1984 for the 40th anniversary of the landings. Interviews, stories you have never heard, footage from the war, etc. It's got a British focus and a British flavor, but I recommend it, if for nothing else, the men reflecting back to those days in their youth when they took part in the invasion of Europe.