When Katy the ambulance is being driven up the steep slope out of the depression, briefly she appears with a two-wheel drive type straight-beam front axle; whereas in the rest of the sequence, a four-wheel drive front axle with differential case can be seen (side shots also show transfer box and prop shafts to front and rear axles).
The head on the beers at the end changes from a lot to very little and back again in nearly every shot.
The level of beer in the glasses is inconsistent between shots when they are finally drinking beer in Alexandria.
When they stop at the dry well and begin to dig it out, Van der Poel is seen digging with his shoulders approximately even with the top of the well. In the next scene, he is only waist-deep.
At the end, when Lutz leaves Katy for the bar, he is not wearing dog tags. In the next scene, on entry to the bar, he is.
When a group of German Stukas bomb the minefield, one of the camera shots is of a plane's bomb doors opening. Stukas didn't have bomb doors as their bombs were mounted externally.
While trying to escape from the others, Captain van der Poel falls into quicksand and sinks beneath its surface. However, it is a common misconception that quicksand is so deadly. Sand saturated with water is denser than the human body (and far denser than water alone), so you would only sink up to about your thighs. At best, it would be an inconvenience but easily escapable.
In the first encounter with the Afrika Korps, the German troops are riding in two American WWII era half-tracks rather than the German half-tracks they would have been using at that time and location.
The Beaufighter which flies over Katy has sharp-edged diagonal stripes under the wings which would have been yellow and black. This denotes a target towing aircraft.
The Austin K2Y ("Katy") ambulance used in the film is clearly a 4WD version as evidenced by the prop shafts which can be seen running fore and aft from the transfer box. However, the British issue K2s were all 2WD versions, which would never have been able to achieve some of the manoeuveres seen in the film. In fact, the ambulance used in the movie was one-off special constructed from a 4WD Canadian military pattern chassis.
The following quoted statement is incorrect: "The British party have what they call jerrycans. In fact only the Germans had them; hence the nickname." In fact, the British had captured large numbers of Axis jerrycans in Benghazi, and were also making their own copies of the German cans since seeing them in Norway. Unlike the Americans, the British directly copied the superior design of the German cans. It would be hard to tell the difference without seeing what language the embossed writing was in.
At the checkpoint entering Alexandria, Capt. Anson collects identity papers for Sister Murdoch and MSM Pugh to show to the MP Captain, but does not take any proof of identity from "Van der Poel," nor does the MP captain (who clearly knows he is there) ask to see him or check him out. However, this is because Anson had already told the MP Captain that he had a German officer with him.
When Captain Anson tries to stop the runaway ambulance going down the hill---from the running board---there is clearly someone in the driver's seat in two shots.
During the sequence when they are trying to get the ambulance up the hill by winding the starting handle, one shot shows the ambulance apparently on a hillside, but the clouds are also sloping, parallel to the hill, showing that the camera had been titled to simulate the slope.
Although Basil Hoskins's character is described as Corps of Military Police lieutenant, his cap badge is that of the Middlesex Regt. The NCOs are wearing the correct MP cap badges.
When the ambulance encounters the second group of Germans, none of the Germans have magazines in their sub-machine guns.
The CMP Officer and 2 CMP NCO's who enter the bar to arrest the German in Alexandria are not showing any whistles with chains in their breast shirt pockets as all CMP's would. A chain should be seen linking from one pocket to the other.
In the very last scene, as Lutz is being driven away from the bar by the British military police, a Land Rover can be seen parked next to the bar. The first Land Rovers were produced in 1948, six years after the battle of Tobruk.
The Military Policemen in the film are wearing RMP shoulder titles. They should be CMP. It was not until 1946 that King George VI granted the 'Royal' prefix to the Corps of Royal Military Police (RMP) in recognition of its outstanding wartime record (CRMP was chosen to avoid confusion with the Royal Canadian Mounted Police or RCMP).
At the checkpoint when entering Alexandria, the MP Captain hands over a shirt saying "This is for your South African friend." Later Captain Anson states that he has told security that he has a German Officer with them. Anson is trying to conceal Lutz's assumed identity and would not have told the checkpoint captain that Lutz was South African.
After some days of travel, Sister Diana asks where Captain Van der Poel is going with a shovel, to which the others reply, 'Never ask,' implying that he is going off to the toilet. But surely well before this time, one of the others would have done the same, prompting the same question. At the very least, she would have asked long ago what the arrangements were for such things in the desert.
When running short of water Captain Anson proposes three alternate routes the party can take---the first goes directly north, the second takes a northeasterly route along the top of the Quattara Depression, and the third option is to visit the Qara Oasis and then travel east across the depression itself. But as the oasis is on the far west of the depression, there is no reason why they would not then travel along its top edge as previously proposed, rather that risk the dangers they subsequently encounter by entering and crossing it.