One of the greatest films ever made, and by far, the most expensive silent film comedy ever made, one of epic proportions.
The film is structured by essentially two long chases, and bound by great storytelling and gags along the way.
The film looks gorgeous. Buster Keaton intentionally wanted to capture the look of the photographs of famed Civil War photographer, Matthew Brady, and he succeeded phenomenally.
That this film takes the point of view of a Confederate railroad engineer, as someone pointed out, is due to that Keaton was taken with a novel he had read, written by the actual engineer, who practically single-handedly captured a Union Army regiment. So it's a true story, and regardless of the side, it's quite a story!
We should never shy away from captivating stories. The movie, Downfall, depicted Hitler's last days, and it's a fascinating movie.
The General doesn't take sides with regard to who was right or wrong, politically speaking. It just tells the story of one railroad engineer whose sole passions in life are that he loves working his railroad engine and loves his girl. The story, itself, is about getting his stolen engine back, inadvertently getting caught up in the battle . That's the arc of the film. It's Keaton's genius as a storyteller, creator and performer of ingenious gags, and sheer cinematic beauty, which take this film to another level.
It's a wonderful film.