Prince Harry's memoir "Spare" officially went on sale Tuesday. Here are some notable details: Harry claims his older brother Prince William attacked him during an argument about his wife Meghan and knocked him to the floor. Harry refers to William as "my beloved brother, my arch-nemesis".
He writes that he was desperate for William's company after their mother Diana died but that his brother disowned him when Harry started at the same senior school, Eton College.
Spare is the fastest-selling non-fiction book ever in the UK, Sky News reported, citing the publisher, saying it had recorded a sales figure of 400,000 copies so far across hardback, ebook and audio formats.
Sky cited Transworld Penguin Random House as saying that the book was "exceeding even our most bullish expectations"
Harry also recounts a childhood fight in the back of a car driven by their father, the future King Charles III. He orders William to get out and ride in a separate car driven by bodyguards.
"Behind us, I could just make out the future King of England, plotting his revenge," the memoir states.
Charles pleaded with his sons to stop fighting at a meeting after the funeral of his own father, Prince Philip, in April 2021.
"Please, boys -- don't make my final years a misery," he told them, according to the memoir.