In the opening scene the Soviet soldiers inspect a battlefield in the aftermath of a previous battle. It is the very first dialog we hear and one of them says the dead enemy soldiers are Hungarians. Any history buff with some self-respect knows that the scene is wrong. All Hungarian troops on the Easter front were smashed in the battle of Voronezh, and they barely destroyed a single Soviet tank, let alone half a dozen as seen in the movie. But this is still not a mistake but a deliberate misinterpretation. Its meaning unfolds later and gets its meaning in the very final scene with Hitler's monologue: history happens in people's memories, reality just serves as a base for these memories. You can tell this mistake is deliberate because the film takes extreme care for accuracy in every level, down to the smallest decoration on a uniform, but this one is like an elephant in the room.