This was repeated three times.
When the cadets joined in their all raised their hats in the air.
It marks the couple’s first joint public engagement since the Duke of Edinburgh’s funeral on Saturday.
Both Kate and William wore dark clothing as a line of respect, with the Duke in a black tie while Kate wore a black military-style coat.
During the visit, Kate also tried her hand on a flight simulator, named a Grob Tutur.
Prince William, who is second in line to the throne, stood and watched as he held her handbag.
The couple then posed for photos with the air cadets.
William and Kate met with a number of cadets taking part in field craft exercises and leadership tasks before speaking to a number of the young people who are preparing for their Duke of Edinburgh Awards.
Each year, the Air Cadets receives approximately 3,000 awards across the scheme’s Bronze, Silver and Gold levels, amounting to over 193,000 Awards since the programme began in 1956.
The pair also heard more about the Air Cadets’ Pre-Duke of Edinburgh’s Award ‘Blue Badge’ scheme which is aimed at cadets aged between 12 and 14, and allows them to begin to develop their skills and engage in activities before they are of age to take part in the Bronze, Silver and Gold levels.
The visit coincides with the Queen’s birthday, who today turns 95.
She is expected to have a low-key day, with few celebrations.
Her Majest was said to have lunch with close family members and video calls with great-grandchildren as she continues to shield at Windsor Castle with about 20 staff members.
It marks the first birthday she has spent without her husband of 73 years by her side.
MORE TO FOLLOW…