I have just read the diary of a Royal Marine who was taken POW on Sunday 26 May 1940. He said he was a Vickers machine gunner and had landed to destroy the harbour instillations. He was caught up in the defence of Calais, became a POW and was liberated on 2 May 1945. Is there any other information available/source about this action? I would like to go back and interview him from a better knowledge base.