US President Barack Obama said the American commitment to liberty which is "written in blood" on the beaches of Normandy endures with a new generation.
Speaking at a D-Day memorial event in Colleville-sur-Mer, Obama said: "I am honoured to return here today to pay tribute to the men and women of a generation who defied every danger.
"Among them are veterans of D-Day, and gentlemen we are truly humbled by your presence here today."
British veterans were cheered and thanked as they paraded through the streets of Bayeux today.
Otley veteran, Harold Robinson had a 24th birthday with a difference, as he swapped cards for rifle rounds as part of the D-Day landings.
D-Day veteran Brian Carter from Cambridgeshire has a unique record of the Allied invasion with a compelling series of his own photographs.