Factual error: Schaffer and Smith are captured and the Nazis are taking them away in a car. After some fighting, the car crashes. While the Nazis fly through the vehicle's windshield, our heroes sit like they had seatbelts, which they didn't.

Continuity: When Smith is rapelling out of the castle and nearing the bottom, Jones/Carnaby is to the left of Smith but in the next shot he is to the right of Smith.

Factual error: In the flashback scene where the commandos are being briefed on their mission, they are told that General Carmody was on his way to a meeting with Russian officers on Crete. Hardly the best place for a meeting between the Allies since Crete was then under German occupation.

Continuity: Major Smith (Richard Burton) forces one of the traitors out of the castle window on a rope. He is wearing standard battle dress. When the traitor is shot by one of the Germans, he falls wearing a camouflage smock.

Other: In the scene where Smith and Schaffer are riding with the SS in the staff car, after the car hits the snow bank, Smith picks up the SS Colonel and puts him back in the car. The Colonel is wearing a Major's collar tabs.

Continuity: As Mary is starting the rappel down the rope out of the castle, her MP-40 is slung on her right side with the muzzle pointing forward, but in the next shot it is slung across her back with the muzzle pointing to her left.

Continuity: After Smith and Schaeffer are done rigging the trees and poles with explosives, Schaeffer gets off the motorcycle and you can see the seat of his pants is wet. As they are entering the shed, the seat of his pants is now dry.

Plot hole: When Smith and Schaffer are entering the castle via a rope Mary has lowered for them, Smith stops halfway up to look through a large window. Clearly visible through this window are the faces of at least two soldiers with others in the background. It is inconceivable that not one of them would notice: A) the rope suddenly dangling outside; B) Smith's solid frame as he stares in at them; C) Schaffer scrambling up the rope after Smith; or D) the rope bouncing around while Schaffer drags it in along with the attached backpack.

Plot hole: In one scene, the heroes of the film (i.e. Burton, Eastwood and others) locked themselves up in the cable car control room within the castle. The pursuing Germans wasted valuable time trying to break down the heavy wooden door of the control room with axes. Why didn't the Germans use grenades or other explosives? They could have instantly blown open even the sturdiest wooden door.

Factual error: Smith has the books with names in his pocket when he goes into the water, jumping from the cable car. When he shows the books to Turner, they are in perfect shape. They should have been waterlogged or at least showed some sign of water damage.

Revealing: When the cable car is seen in long shot coming down from the hill (carrying the film's heroes) it is painfully obvious that while the cable car is real enough, the mountain behind it is fake.