After being forced back to Dunkirk by the Germans in May/June 1940 the British Expeditionary Force in France had to be evacuated from Dunkirk by all types of ships and vessels, this the story told by a both authors who served at the time is a fascinating account of what went on."Dunkirk" was first published in 1950 under the title "Keep The Memory Green".It was used as inspiration for the 1958 film, Dunkirk, starring Richard Attenborough.