The same set is used for the entrance to Count Villiers' house in early scenes and for the road block later in the movie.
Horses are galloping over grass but from the noise it sounds as if they are on a road.
The uniforms and weaponry of the soldiers do not reflect the French army of the time. The uniforms are more Spanish in appearance than French. The soldiers on guard at a door would not have used spears like those in the film. If using bladed weapons, they would have carried pikes. Ordinary soldiers would not have carried swords, only officers did so.