Services have been held across Wales to mark 100 years since the Battle of the Somme began.
Today a national service of remembrance was held on the Somme frontline in honour of the 4,000 Welsh soldiers who died or were injured at the Battle of Mametz Wood during the First World War.
The ceremony to commemorate the Battle of Mametz Wood, and the 4,000 Welsh soldiers involved, is now underway in France.
A national service of remembrance is being held to honour the 4,000 Welsh soldiers who died or were injured at the Battle of Mametz.
An overnight vigil is taking place this evening to commemorate 100 years since the bloodiest day in the history of the British Army.
We visit two communities in the South Wales Valleys which are preparing to mark the commemorations