A moving story of courage and resistance, I saw it as a kid a couple of times, and I never forgot it. It is the kind of tale that, when seen during an impressionable phase while we grow up, surely has a positive effect on any boy's or girl's mind.
The script has a couple of dead spots trying to make the film a bit longer, but it does not lose our interest, even if its target audience is mainly the young. Andrew V. McLaglen's direction is effective, not impressive, but assured, and he would soon go to bigger productions and become a reliable Hollywood artisan.
Neither restored nor available in a fine copy by any official home video source, it is hard to find, but if you search, you will find it.