Continuity mistake: When the German scouts at Bir Acroma are killed or captured, Gunn's men acquire a water cooled machine gun from their half-track. On the vehicle is a German 1908 Maxim in 7.92mm caliber. When it is shown being carried to the ruins it has now become a British Vickers Mk I in .303in caliber (which it generally stays as for the rest of the film) on its matching Mk IV tripod. And in a few shots showing the gun being fired from behind it is now a Browning M-1917 gun in .30in caliber.
Andrew Upton
20th Nov 2015