Other mistake: A lot of the aircrew are wearing a 1939-45 Star medal ribbon. This medal was obviously issued after the war's end.
Other mistake: In the scene when the Zulu warriors have broken through the roof in the hospital. The British make a hole and escape through it. You can clearly see the hole that they are going to cut open because it is a different color.
Other mistake: When Papa Boule kicks Labiche off his train and tells him to throw the switch (turnout) Labiche actually operates one behind the train, not in front of it.