Other mistake: The movie concludes with George Peppard crashing a test monoplane. The shot is from James Mason's office, looking out over the airfield. We hear the sound of the diving plane, but do not see it. After the camera has been focused on the field for a few seconds, we see a large explosion, which is meant to represent the crashing plane. The falling plane is missing. From the position of the shot, we should have seen the crashing plane.
Visible crew/equipment: In the scene where Jeremy Kemp and George Peppard are playing daredevil in their planes and Kemp's plane hits a brick tower there is a shot of the plane plummeting to the ground. The alert viewer can see the shiny metal wires that were used to support and guide the plane on its way to the ground.
Factual error: The Fokker DR1 aircraft should be rotary engines which have a completely different sound than the radial engine which is shown after landing following the strafing mission against ground troops, when Lt. Stachel disobeys orders and engages in aerial combat with the British planes.
Continuity mistake: After George Peppard shoots down the English spotter plane at his airfield, fellow pilots crowd round as he confronts his Squadron Leader. The tail of the downed aircraft is behind him. When the shot changes to show George walking away, however, the crowd is standing in a different position in relation to the tailfin.
Factual error: 1. When Stachel first arrives at the squadron, they already have Fokker DVII's as part of their complement. This machine did not come into service until after Richthofen was killed, yet he makes a brief appearance in the scene where Stachel is shot down. 2. The German markings are of the older style (prior to the introduction of the DVII). From early 1918 the national insignia is supposed to be simplified, like a plus sign, without the flared look of the Maltese cross.