The suffering that the people of Malta went through during WW2 has largely been forgotten in the UK.
This film tries to show how much hardship was born by the Maltese and the British military on the island. It does it by conjuring a romance between an RAF pilot and a local girl, and generally it succeeds.
At the time the film was made parts of Malta were still showing the damage done by German bombing and the harbour and military installations were much as they had been during the war, making ground based scenes look quite authentic. Unfortunately, the films budget didn't run to halfway decent model work and anything showing planes in the air (that's not archive footage) is embarrassingly poor even for the day. At least being black and white, archive footage blends in pretty well.
The acting can be a bit emotionless at times (too much stiff upper lip perhaps), but Alec Guiness is excellent as the rather introvert pilot and he has good support from the likes of Jack Hawkins, Anthony Steel and Flora Robson.
Even allowing for it being an idealised portrayal of events on Malta, this film gives us a glimpse of what things must have been like for those involved and why the Maltese were awarded the George Cross Medal.