The Prince of Wales has been awarded the highest rank in all three military services by the Queen, BBC News reported.

Prince Charles becomes a Field Marshal, Admiral of the Fleet and Marshal of the Royal Air Force. His appointment to the honorary five-star ranks recognizes his support for the Queen as Commander-in-Chief. It comes as the Duke of Edinburgh prepares to attend the Trooping the Colour ceremony in London on Saturday, a week after leaving hospital.

Buckingham Palace said the Prince of Wales's appointments were not related to the Queen's Birthday Honors.

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.

Promoting heads of the services to five-star ranks was stopped in 1995 to cut costs but has been retained in special circumstances.