CASTLE THUNDER: Heard when Andrews first meets his raiding party about ten minutes into the film.
Debut of Morgan Woodward.
Filmed on the Tallulah Falls Railway which went defunct in the early 1960s.
In the film there are 16 raiders. In reality there were actually 20 raiders that participated in the raid. There had initially been 24 raiders, but two joined Confederate forces after being stopped on their journey down to Marietta, as Andrews had instructed, and two more simply overslept and missed the train. These four were not depicted in the film as well as four others who participated.
It was raining on the day of the real chase (this is simply a deviation from the source material and a fact the filmmakers were likely aware of, which is why this is not listed as a goof).
Only thirteen pieces of equipment were actually used: two full-sized locomotives, one yard engine, three passenger cars, two iron box cars, and five wooden box cars that were built specifically to be destroyed in the film. The various pieces of equipment wore different numbers on different trains throughout the movie.
The locomotive the plays The General in the film (#25 William Mason) is the same locomotive used as The Wanderer in Wild Wild West.
The real General, the locomotive stolen in the movie, is on display in Kennesaw, Georgia, at the Kennesaw Museum of Civil War and Locomotive History.
The real locomotive "Texas" is on display at the Atlanta Cyclorama and Civil War Museum in Atlanta, Georgia.
William Campbell is depicted in the film as a Union soldier. In real history, Campbell was the only civilian beside Andrews to participate in the raid; his character in the film is also quite different than his real life character.