Interesting reading in that the Somme inspired Tolkien's Lord of the Rings; Tolkien had just graduated from Oxford with a first class degree in literature when he saw his first active service at the Somme. From July 1916 until he was invalided out with trench fever at the end of October, he experienced the full relentless ghastliness of day after day of trench life under fire - the discomfort, the cold, the mud, the lice, the fear, the unspeakable horrors witnessed. He had taken comfort from the fact that he was fighting alongside his three oldest and dearest friends from his school-days - a quartet of gifted would-be-poets who hoped to become outstanding literary men. But by November, two of those friends were dead. http://news.bbc.co.uk/1/hi/magazine/5133000.stm Watching some of the battle scenes in the film,you can almost see a simularity of the troops going over the top.