Prince Harry is set to replace his grandfather Prince Philip as the head of the Royal Marines.
It comes after the 95-year-old Duke of Edinburgh announced he would be stepping down from public duties by this autumn.
He has been the ceremonial head of the elite unit since 1953 but is set to be replaced by the 32-year-old prince.
It is understood Harry has been approved by Major General Rob Magowan, who is Commandant General of the Corps, but The Queen will make the final decision.
As well as being the current head of the marines, the Duke of Edinburgh holds a number of other military titles including Field Marshall of the British Army as well as the Admiral of the fleet and Marshall of the Royal Air Force.
The Royal Marines were established more than 350 years ago on October 28, 1664 – and were initially known as the Duke of York and Albany’s Maritime Regiment of Foot, but were given the official title of “Royal Marines” in the early 1800s by King George III.
The elite fighters are trained to operate worldwide – providing an amphibious assault capability from a Royal Navy ship, that can be deployed at very short notice – and there are approximately 8000 serving today.
Training takes place at the Commando Training Centre in Lympstone, near Exeter – lasting 32 weeks. All marines who pass the Commando course are entitled to wear the famous green beret.
Prince Harry has yet to take the commando course.