Queen Elizabeth II appointed her eldest son Prince Charles as a Field Marshal, Admiral of the Fleet and Marshal of the Royal Air Force.
BBC quoting Buckingham Palace said the Prince of Wales's appointments were not related to the Queen's Birthday Honours.
Two other members of the Royal Family already hold five-star military ranks, the Duke of Edinburgh in all three services and the Duke of Kent, who is a Field Marshal.
Charles' two sons are both military helicopter pilots -- Prince William in a search rescue role with the RAF and Prince Harry on attack helicopters with the army.