Other: When Miller throws explosive into the German patrol boat's engine room it explodes in sheets of flame, etc. However, there is no damage at all to the fishing boat - no scorch marks and no debris. At least the sail should have caught fire.

Other: At the beginning of the film a bomber is crashing. As this is happening another bomber is stationary in the sky.

Continuity: In the scene where the group is climbing the cliff, even when Mallory and Stavros reach the summit and kill the German soldier, there is hard rain. However, in the next shot when they throw the German soldier by the cliff, there is no rain and the sky is clear.

Continuity: When Gregory Peck and David Niven are planting the explosives, they are both wearing uniform shoes, when they are getting ready to go down the rope to escape, they are both wearing paratrooper boots and Gregory Peck's are white.

Other: When the fishing boat is stuck at the base of the cliff we see it tossing and rolling. However, when Brown is in the hold there is no movement. Also when the men are unloading their supplies the boat is obviously fixed and stationary.

Factual error: Throughout this movie it is stated that Mallory can speak German "perfectly", that is, without accentual or grammatical problems at all. But Gregory Peck's 'German' throughout the movie is obviously less than perfect. (I ought to know; I live in Germany and speak both English and German well enough to notice the difference.)

Continuity: When James Darren has his final shoot-out, the German officer approaching him looks unscathed, but then in the next shot his coat is full of bloody bullet holes, before they start shooting at each other.

Revealing: In the shots taken from above, on the scene where Mallory and Stavros are climbing the cliff under hard rain, the rain falls over the back of them, not over his head. Reveals that this scene was taken in horizontal position over the floor. Not taken in vertical position.

Continuity: When the girl is killed by Maria we see a shot of her from the shoulders up. She is not shot in the head so we can only suppose that has been shot in the heart (for her to die so quickly) but when Brown checks her out there is no blood and no exit wound on her back. So where was she shot?

Audio problem: When Maria is talking to the other woman at the ruins after she comes to, the last time she says, "Our friends," her lips don't match the words.