His mum is the reigning Monarch.
Although he resigned his commission as Second-Lieutenant, Royal Marines in January 1987 (before graduation) he has since acquired three British honorary military appointments;
Royal Honorary Colonel, of the Royal Wessex Yeomanry
Royal Colonel, of the 2nd Battalion, The Rifles
Commodore-in-Chief, of the Royal Fleet Auxiliary
...along with two Canadian appointments;
Colonel-in-Chief, of The Hastings and Prince Edward Regiment
Colonel-in-Chief, of the Saskatchewan Dragoons