The Four Horsemen of the ApocalypseGoofs
In the scene where the German army parades through Paris (June 1940) they're marching under the Triumphal Arch and past the Tomb of the Unknown Soldier (this is indicated in the scene's opening shot with the eternal flame on the tomb). In fact, the Germans refrained from marching through the Arch, as did de Gaulle and the Free French in 1944. The German HQ wanted to avoid stirring up revulsion and hatred, and no parade at all has marched there since the Unknown Soldier was put to rest in 1920. They have all passed beside the Arch (part of the symbolism of the Tomb is a wish for "no more wars").