As this week has contained the 75th anniversary of the miraculous rescue of British and Allied troops from Dunkirk, there can be little doubt about what film should be this week’s Friday Night Movie.

This is a fantastic stirring tale starring Sir John Mills as a British corporal suddenly placed in a position of command with the secondary tale of how the Dunkirk emergency pulled more and more of the Britons based at home into the war effort The film also shows how many ordinary Britons starting to realise just what was at stake and how great the threat was from the Nazi regime.