I saw it this weekend in an Imax cinema, the assault on the senses gave some idea of the naked fear those on the beach and below decks in vulnerable vessels must have experienced. It is no surprise that those involved treated the memory of the events and that of the fallen with a sort of reverence. The poppy symbol means something in the UK and so it should even though it refers to the earlier war.
On a lighter note, the Thames barge featured in the film, (the little ship with the red sails) is available as living accommodation, birthed in London, for £425,000)