THE Queen’s beefcake great-nephew is to become the first royal to join the Commandos — after using Balmoral as a training ground.
Arthur Chatto, 22, told Her Majesty last week he had been accepted to train as an officer in the Royal Marines.
The personal trainer and model took tips from Prince Edward — who dropped out of the course in 1987 after completing a third of the 12-month training.
Arthur — son of Princess Margaret’s only daughter Lady Sarah, 57 — is rated the sexiest royal.
He posed for a string of topless photos on his now-deleted Instagram page which won an army of fans.
As well as working in a gym he was part of the youngest team to row around the United Kingdom.
And while visiting the Queen and family at Balmoral this month, he made 20-mile hikes and went wild camping in the Scottish Highlands.
Arthur — 29th in line to the throne — will become the first member of the royal family to join the Marines if he passes the 32-week course.
A royal insider said: “Arthur Chatto has been accepted to train as an officer in the Royal Marines.
“He told the Queen all about it and she’s pleased and proud. Prince Edward has been very supportive.
“Arthur has even been going off into the wilds at Balmoral with all his kit and camping out as he prepares for the commando training.
“He has gone straight into the officer training in this year’s intake and is very keen and up for it.
“It’s a dead cert he’ll get a lot further than Prince Edward ever did.”
Prince Harry was recently stripped of his honorary title as Captain General of the Royal Marines after quitting royal duty.
