It's from the James Bond movie The Living Daylights.

The villain is playing out a war scene and pretending as if he were the general for the union army against the confederacy.

Because the whole point of his character is not that he would support the confederacy or the union, but that he's fascinated with warfare, particularly historical warfare as a hobby.

If this scene were done today, they'd make SURE that he stated in dialogue that he as the villain is acting out how he could have made the confederacy win and "destroy those sinister Union dogs who want to suppress true Americans".

They'd never have a villain imagining himself as a union general in a million years in a modern movie.

The reason he is in this movie from the 80s is because back before everything was propaganda, people could realize that people's characters didn't need to revolve around liberal talking points. His character is really into historical battles. There's no higher commentary than that, nor is it needed.

But something that simple would never be allowed nowadays.