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.

Continuity: The film is set on the Western Front, 1917 but was filmed in Ireland in 1965.  As George Peppard is driving to join his squadren for the first time the camera pans the horizon and loads of houses can be seen to have TV aerials...