Saving Private Ryan was based on the Omagh beach landings where a USA force landed. Watch the first 25 minutes of this film today and realise what sacrifices were made.
The few survivors of the landings had a special screening and agreed the film depicted the horrors about as closely as possible.
2000 young men were slaughtered when a cock up was made as they thought the USA air force had destroyed the German weaponry.
However the Germans were intact high on the cliffs and picked off the soldiers as they liked with no restraint.