This finely-produced war movie, directed by John Guillermin and featuring an excellent cast that includes George Segal, Robert Vaughn, Ben Gazzara, and E.G. Marshall, isn’t as well-known as most of the other films on this list, but features one of the most interesting behind-the-scenes stories. Largely shot (fittingly) in and around the Czech town of Most, with the Davelský starý most in Davle filling in for the titular bridge, cast and crew had to flee production when the invasion of Soviet troops interrupted filming during 1968.