The Duchess of Cambridge has heard stories about her grandmother's wartime role at the famous Bletchley Park in Milton Keynes - home of the code-breakers.
Lady Marion Body, friend of Kate's grandmother Valerie Glassborow, described how as young women they worked together.
She confessed that their job was "tedious" but said they were young women who still managed to have fun.
The pair met when the Duchess toured Bletchley Park to see the results of a major £8 million restoration project that have returned the derelict huts back to their wartime appearance.
Miss Glassborow, as she was known before marrying Kate's grandfather Peter Middleton, was a civilian member of staff along with her twin sister Mary at the Government Code and Cypher School and worked in Hut 16, now restored Hut 6.