King Charles gives very personal insight into his cancer battle: Monarch ... trends now

King Charles today revealed he has lost his sense of taste during cancer treatment.

The 75-year-old monarch was speaking to British Army veteran Aaron Mapplebeck while visiting the Army Flying Museum in Middle Wallop, Hampshire, this afternoon.

Mr Mapplebeck said he underwent chemotherapy last year for testicular cancer and that lost his sense of taste - and the King revealed this had also happened to him.

Buckingham Palace has not yet confirmed details of the King's treatment, with royal officials only saying so far that he is being treated for an undisclosed form of cancer.

Earlier, Charles arrived by helicopter for the special ceremony with Prince William where he officially handed over command of Prince Harry's former regiment.

The monarch bestowed the prestigious position of Colonel-in-Chief of The Army Air Corps to his heir at the Army Aviation Centre in Middle Wallop, Hampshire.

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King Charles officially gives heir Prince William his colonel-in-chef role...despite it being Harry's old Army regiment

William will represent the Army's airborne wing, including his brother's former unit - 662 Squadron.

Harry served in the regiment as an Apache helicopter pilot in Afghanistan, and it was widely thought he would have taken the role until he made the decision to step back from royal life in 2020.

The rare joint engagement for Charles and William comes on the same day that Harry is jetting back from his 'quasi-royal' tour in Nigeria with his wife Meghan Markle.

The Duke and Duchess of Sussex are expected to land at London Heathrow later today before heading back to Los Angeles and their £12million Montecito mansion.