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

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

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

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

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

Kate Middleton took the salute as the new Colonel.

William and Kate attended the parade together.

The Irish Guards are a regiment of the British Army.

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