According to Swedish press at the time of the films TV premiere, the flume ride sequence was filmed in Sweden rather than - as originally considered - Canada. A trip across the Atlantic was too expensive.
British director Lindsey Anderson was asked to direct.
Custer was one of the Civil War's famous "Boy Generals". Nelson Miles, Wesley Merritt, and Galusha Pennypacker were among the others. They would all be reduced in rank once the war was over, though Miles and Merritt would rise to general rank in the regular Army after the war.
Originally to be directed by Akira Kurosawa, but he pulled out.
While this film was still in production, Philip Yordan and his company (Security Pictures) had production designer and special effects expert Eugène Lourié design and shoot special effects footage for Krakatoa: East of Java even though there was no script. This footage would also be shot in large format for Cinerama presentation. Those who were shown the early footage began ignoring this film and asking when "Krakatoa" would be ready.