It's questioning wither some of the footage of the Somme battle is real and if some is faked, also there is a lip reader who reads the lips of old war footage and can tell what is being said, also they are trying to put names to "Great War Somme Heros", it is just a very interesting and fascinating film!
"Only the seeds that in life we have sown, these will pass onwards when we are forgotten, only remembered for what we have done" - Only Remembered - War Horse