Losely based on the WW2 evacuation of Alderney cattle from the Channel Islands.
This film was renamed "Island Rescue" for its US release.
The fictitious island of Armorel in the film may possibly be based on the island of Sark, a small island in the southwestern region of the English Channel. One of the Channel Islands, it was one of the locations where this movie was filmed.
During World War II, the Germans occupied the Channel Islands from June 1940 until May 1945. They were the only part of Britain ever under German military authority.