When Jocko and Julie go to the Savanarola Club in town, there is a neon sign in a window with open blinds as seen from the outside. But when they step inside, the blinds in the window are closed and no light from the neon sign is seen.
When De Paris is in his quarters talking with McKee and practicing the sword drill in the mirror, he lifts the sword in front of his face and holds it there but there's no sword in the mirror image.
As the train approaches and just before it begins to move again the sound of a diesel locomotive horn is heard. However, the screen clearly shows a steam locomotive pulling the train. Steam locomotives used steam whistles, not horns.