The Duke of Cambridge attended a service of commemoration at the National Memorial Arboretum marking the 75th anniversary of the Normandy landings.
Prince William joined more than 20 D-Day veterans at a public service in Heroes' Square, where he gave an address that had originally been made by his great-grandfather George VI in 1944.
Wreaths were then laid at the Normandy Campaign Memorial.
He also met those who served on D-Day, helping in the successful Allied landings on the heavily fortified Nazi-occupied coastline of northern France on 6 June 1944.
After laying a wreath, Prince William delivered a short reading.
Centenarian Pixie Jenkins, a former Wren in the Women's Royal Naval Service, also attended the event.
In 1944, Mrs Jenkins helped drive troops and equipment to Newhaven Docks in East Sussex in the build-up to D-Day and throughout the Normandy landings.
The 100-year-old from Aldridge, West Midlands, was among a handful of veterans who were able to travel to the special D-Day 75 service in Staffordshire.
"I think the men that went over were wonderful and I hope the younger people today realise how fortunate they are to have people like that," she said reflecting on the anniversary.
"They are wonderful, wonderful men that went over. I salute them all."
Meanwhile, the Prince of Wales and the Duchess of Cornwall attended events in Bayeux, Normandy, to commemorate those who lost their lives on D-Day.
The Royal British Legion held a service at Bayeux Cathedral attended HRH Prince of Wales, the Prime Minister and the Defence Secretary.
After the ceremony, veterans were paraded to the Commonwealth War Graves Commission’s Bayeux cemetery service which was supported by a tri-service Guard of Honour and military musicians.