The only words we can say to veterans are “thank you”, Theresa May has told a ceremony to mark the 75th anniversary of the Normandy invasion.
Her words were echoed by French President Emmanuel Macron, who told D-Day veterans gathered in northern France that we owe them “our freedom”.
The day of commemorative events began with a lone piper marking the moment the first UK soldiers went ashore.
The US president is at a service at the US war cemetery at Omaha Beach.
Hundreds of veterans have gathered in Normandy for the anniversary of the largest combined land, air and naval operation in history.
Mr Macron and Mrs May – in one of her final engagements as Conservative leader – were in Ver-sur-Mer to see the first stone laid for a memorial to commemorate the 22,442 British troops who died there in the summer of 1944.
The memorial, which overlooks Gold Beach, depicts three soldiers advancing across the beach.