Second World War veterans from Wales joined colleagues from around the world to see the Queen dedicate a memorial to the more than 50,000 airmen who died during Second World War.
The Bomber Command Memorial in London's Green Park honours the memory of the RAF crews who lost their lives.
Today more than 5,000 surviving airmen joined the Queen, Duke of Edinburgh and other members of the Royal family for the occasion.
One of those was 91-year-old Thomas Telford from Ruthin, a bomb aimer and navigator who flew bombing missions over France and Germany. He joined in 1941 as a volunteer.
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Soldiers from 1st Battalion Welsh Guards have overseen the planting of 2,000 oak trees to mark the centenary of the Battle of the Somme.