She is getting better, yes, said the Prince.

She would have loved to be here today.

Catherine only found out at the end of her life.

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LONDON, ENGLAND - OCTOBER 09: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge leave the Global Ministerial Mental Health Summit at London County Hall on October 9, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

Glassborow was breaking German codes in Hut 16 at Bletchley Park when news came through that Japan had surrendered.

I was able to tell her.

Valerie never would have spoken about itI wouldnt have done until recently.

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Prince William, talks with D-Day and WWII veterans following the 80th anniversary commemoration event in Portsmouth on Wednesday

When she was alive sadly she could never talk about it.

She was so sworn to secrecy that she never felt able to tell us.

It is our privilege to hear their testimony.

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Kate Middleton, pictured here in 2023, learnt about her grandmother Valerie Glassborow’s crucial codebreaking contribution to Britain’s war effort during a trip to Bletchley Park a decade ago

But our role is not purely passive.

This article first appeared onTatler.

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Prince William delivered a moving address at the D-Day commemoration ceremony, reading out a diary entry from Captain Alistair Bannerman, who wrote to his wife as he prepared for the invasion