Prince William opens up on Kate Middleton's new role.

Prince William expresses true feelings as Kate Middleton takes on a new role.

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The couple visited the Irish Guards at the St. Patrick's Day Parade in Aldershot.

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William gave a speech and expressed his sadness as his time as Colonel Irish Guards comes to an end.

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William is immensely proud of the title and everything it stands for.

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The parade concluded with a Royal Salute and march-past.

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Kate Middleton took the salute as the new Colonel.

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William and Kate attended the parade together.

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The Irish Guards are a regiment of the British Army.

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The St. Patrick's Day Parade is a traditional event for the Irish Guards.

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