It’s really nice to see Burt Lancaster, who was nearing 40 at the time, showcasing his charisma and physical abilities with Nick Cravat, a friend and fellow acrobat, in this genuinely entertaining adventure film. The storyline is fairly standard—pirates clashing with an unliked ruler—and the writing wouldn't hold up under close scrutiny, but that’s not really its purpose; it aims to amuse, and succeeds at that. There…