- The Duke and Duchess of Cambridge honored
Prince Philip during a visit to the Air Training Corps. - They met young people taking part in an award scheme founded by Philip.
- The duke and duchess wore black mourning clothes.
The Duke and Duchess of Cambridge honored Prince Philip's legacy at their first royal engagement since his death.
The Queen's husband died on Friday, April 9 at the age of 99.
The visit appeared to be a special tribute to the Duke of Edinburgh, who served as Air Commodore-in-Chief of the Air Training Corps for 63 years. He passed the military patronage to Middleton in 2015, and she subsequently became Honorary Air Commandant.
The duke and duchess honored the royal mourning period by wearing black to the engagement.
The Queen requested that the family observe two weeks of royal mourning after Philip's death.
William and Middleton met young people who were preparing for their Duke of Edinburgh awards, Kensington Palace said in a press release obtained by Insider. The programme was founded and named after Philip in 1956.
The awards, which focus on self-improvement, allow young people to "build the skills, confidence, and resilience they need to make the most out of life," according to its official website.
The Duchess of Cambridge achieved a Duke of Edinburgh award when she was a sixth form student at Marlborough College.
The Squadron took part in a Three Cheers Salute in honour of The Duke of Edinburgh at the end of the visit, Kensington Palace has said.