OK guys
here are some facts:
.- Parts of the movie were filmed in the island of Rhodes. Remember the night scene with german vehicles gathering below the castle gate with the 4 towers. This is the actual castle gate of Rhodes. (they might have altered a little the location,but the gate is the actual one)
see some link:
http://www.intlistings.com/articles/2008/top-25-most-beautiful-castles-in-the-world/.- the village where the outdoors marriage was filmed is an actual village filming
.- if the filming was taken place in Malta or other locations, this might be true. You have to check the details and acknowldgements after the end of the film.
.- the scenario is fictitious one. but the inspiration came from an actual battle, the battle of Leros, already mentioned. The scenario is a very pulpy one, involving a small band of specialists, local agents, double agents, some sort of romance and lots of action.
Some side information:
.- Anthony Quinn received the land free (or ridiculous low) charge to make touristic investments. Not yet realised.
.- The castle surrounds the actual old medieaval city which remains intact. The moat (empty) is also still visible!
In spite to the fact that there still arguments about the way the italians restored the castle, it is worth visiting the island of Rhodes in order to see and wander in the city and the St John's knights, plus the most famous sea, sun, sand touristic attraction. And if you go it is also worth visiting the valley of the butterflies!
.- For those wanting to game a similar scenario, please note that Ian Weekly of battlements has made a resin castle gate exactly matching the impressive Rhodes castle gate! (a resin piece suitable for any scenario from medieval to pulp and modern times)