Sir Nils Olav was promoted to Brigadier by his Majesty the King of Norway's Guard

The world's most decorated penguin received another gong to add to his glittering collection when he was promoted in rank by the Norwegian military.

King penguin Sir Nils Olav was promoted to Brigadier by his Majesty the King of Norway's Guard, who paid him a visit for a special ceremony at Edinburgh Zoo in Scotland.

Sir Nils wore a gold military pin as he proudly paraded his way up the zoo's Penguin Walk, whilst the soldiers of the guard stood to attention.

Barbara Smith, from the Royal Zoological Society of Scotland, said: 'We are honoured to host His Majesty the King of Norway's Guard as they bestow a prestigious new title upon our king penguin, Sir Nils Olav.

'It is a very proud moment and represents the close collaboration between our two countries, Scotland and Norway.'

Over 50 soldiers were in attendance to watch their favourite penguin get rewarded for his years of dedicated service.

The Guardsmen were in Scotland as they are taking part in The Royal Edinburgh Military Tattoo, a grand concert featuring military bands, later this month.

Sir Nils is visited by the Guardsmen every few years and it is said that he recognises them each time they stop by to say hello

Crowds gather to watch Sir Nils receive his prestigious promotion at Edinburgh Zoo

Brigadier David Allfrey, Producer and Chief Executive of The Royal Edinburgh Military Tattoo, added: 'This is just a simply fantastic example of the great relations between our two countries, and it couldn't be a more charming tradition.

'At the Tattoo we of course have many inspecting officers but this is by far my favourite. Congratulations, Brigadier Olav!'

Since his adoption Sir Nils has worked his way up the ranks going from Mascot to Brigadier

The Guardsmen visit Sir Nils every few years and his keepers say that 'Nils always recognises the Norwegian Guardsmen when they visit.'