The true story

Were the writers of  Saving Private Ryan aware of the real-life story of Wilfred Smith?  He was the youngest of six brothers who all fought in the First World War.  One by one, the other brothers were killed in action.  This came to the attention of Queen Mary - wife of George V - who was so appalled at the thought of what the parents had gone through, that she more or less demanded that Wilfred should be discharged and returned home.  And so it was.  He lived a reasonably long life and died in 1968.