This is one of the most remarkable war documentaries ever made.
Following two years of fighting in which cameras were not permitted at the front, The British Army high command suddenly relented and allowed movie cameras to film the build up to the great offensive battle on the Somme and scenes from the fighting itself.
The resulting documentary film proved to be a sensation with over 20 million tickets being snapped up within the first two months of its release.
Although it includes some reconstructions, notably of the famous sequence depicting the opening day of the battle, these are very limited.
The sheer wealth of imagery conveys the reality of the Great war like no other historical document.
Real scenes of wounded men and dead bodies caused controversy at the time and highlighted the bold vision of this remarkable primary source film.
The official film of the Battle Of The Somme is indispensable viewing for anyone with an interest in World War One.