Astonishing WWI film shows a German counter-offensive

Described as the bloodiest moment of the most brutal conflict, the Battle of the Somme claimed so many lives it became synonymous with the First World War itself.Some 1.2 million fell in the blood-stained fields as the Allied forces pushed forwards into a hailstorm of German machine gun rounds and explosives.Grave footage captures the moment German soldiers rushed through trenches and over No M...