The LCM-8 landing craft in the film was manufactured only in 1954.
In the film, the German general has a line: "We have strong radar interference." The word radar was not used at the time, and even in 1944 the Germans didn't even know the word.
It can be found that the Messerschmitt fighter in the film is a Bf-108 "Typhoon" liaison and reconnaissance aircraft that is not equipped with a weapon system.
Most U.S. soldiers with Thompson submachine guns are carrying M1 rifle bullet bags.
The binoculars used by the German observers turned out to be marked in English.
When the warship was about to start shelling the beach, a team of Douglas aerial attackers skimmed across the screen. This fighter did not enter service until the end of the 1940s.
When the glider landed on the Pegasus Bridge, the subtitles on the screen showed the Orne River, and the Pegasus Bridge was actually located on the Caen Canal.
In the earlier French scenes in the film, a Citroen 2VC sedan appeared, which was only produced in 1948.
There is no exclusive mark on the helmet of the 2nd Ranger Battalion that landed at Cape Oak
.
