Harry, 21, who entered Sandhurst last year and will therefore initially be senior to William, has joked that he was looking forward to his elder brother having to salute him.

• 21岁的哈里王子去年考入桑德赫斯特军校，所以他事实上是威廉王子的学长，他开玩笑说，他期待着哥哥向他敬礼。