Officer cadets stand to attention during the Sovereign's Parade at the Royal Military Academy, Sandhurst, southwest of London on December 14, 2018. (Photo by Ben STANSALL / AFP)

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image ?Licensed to i-Images Picture Agency. 14/12/2018. Sandhurst, United Kingdom. Sovereign's Parade,Sandhurst. Royal Military Academy. The Duke of Cambridge represents Her Majesty The Queen as the Reviewing Officer at The Sovereign's Parade . His Royal Highness inspected the Parade and presentd the Sword of Honour, the Overseas Sword and The Queen's Medal.Picture by i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. Officer cadets at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images

Image licensed to i-Images Picture Agency. 14/12/2018. Sandhurst , United Kingdom. The Duke of Cambridge at the Sovereign's Parade at the Royal Military Academy Sandhurst, United Kingdom. Picture by Stephen Lock / i-Images