Tilda Swinton and Ed Stoppard star in in this dramatic WWI true story told through the diaries and letters of men in the field many of whom would never be reunited. Never have so many soldiers been killed in one day’s fighting: 25,000 dead, most in the first hour. This remarkable film is a reconstruction of the First World War battle, recording the campaign of The Somme and showing the elaborate preparations for the attack and the chief incidents of the campaign.