For many in Britain, the resulting battle remains the most painful and infamous episode of the First World War.
Pictures copyright Press Association

13. British soldiers take cover in their rudimentary bivouacs, constructed from tarpaulins and fencing, in the French countryside.
British soldiers take cover in their rudimentary bivouacs, constructed from tarpaulins and fencing, in the French countryside.:- Photo: PA

14. British troops negotiate a trench as they go forward in support of an attack on the village of Morval during the Battle of the Somme. A shell can be seen exploding in the distance.
British troops negotiate a trench as they go forward in support of an attack on the village of Morval during the Battle of the Somme. A shell can be seen exploding in the distance.:- Photo: PA

15. A captured German battery at Herbecourt.
A captured German battery at Herbecourt.:- Photo: PA Photos:PA

16. The ruins of the church at Frise.
The ruins of the church at Frise.:- Photo: PA Photos:PA
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