The nurse was tied to the right bed of the ambulance. Later, she's seen tied to the left bed.
When filling jerry cans at the oasis as Italians the cans wouldn't have been labeled W for water and P for petrol.
The British casualties from the German ambush are shown with criss-crossed boot laces. British army soldiers fasten their boot laces across the boot i.e.from eyelet to opposite eyelet.
The Italian sub-machine guns used by Capt. Douglas' team were the Italian FNAB-43, which were produced from 1943 onward and story-line is clearly depicting the events at the time of the second battle at El Alamein in October 1942.
Just before Capt Leech massacres the Arabs, he sees Capt Douglas' identity disc, which is shown tucked inside his unbuttoned shirt. Afterwards, his identity disc is now outside his shirt - presumably so that Capt Leech can rip it from his neck in one smooth move rather than having to reach inside his shirt to get to it.
The dead "young lieutenant" brought in by Leech at the beginning of the movie can be seen breathing.
Captain Douglas is described as on loan from British Petroleum. During World War II the company was known as the Anglo-Iranian Oil Company (AIOC). The company was re-named British Petroleum in 1954.
The fact that there are only 2 ways to get to the oasis is emphasized repeatedly. The British approach from one direction; the 70 Arabs can be seen approaching from the other. How did the German convoy get there ahead of the Arabs?
Cpt. Leech points out that the new minefield in the road isn't shown on British maps. Yet the second British convoy somehow knows to make the same turn, despite Cpt. Douglas' route being the most tactical.
If the British could overfly the fuel dump to photograph it (near the end of the film), they could bomb it.