Interessantes dados sobre o que sucedeu à 9.ª legião romana na Bretanha e origem da muralha de Adriano, que foi a origem da separação mais clara entre Inglaterra e Escócia.
The Roman Ninth Legion's mysterious loss
The disappearance of Rome's Ninth Legion has long baffled historians, but could a brutal ambush have been the event that forged the England-Scotland border, asks archaeologist Dr Miles Russell, of Bournemouth University.
One of the most enduring legends of Roman Britain concerns the disappearance of the Ninth Legion.
The theory that 5,000 of Rome's finest soldiers were lost in the swirling mists of Caledonia, as they marched north to put down a rebellion, forms the basis of a new film, The Eagle, but how much of it is true?
The legend of the Ninth gained form thanks to acclaimed novelist Rosemary Sutcliff, whose masterpiece, The Eagle of the Ninth, became an instant bestseller when published in 1954.
But what happened to the Ninth?
The early years of the 2nd Century were deeply traumatic for Britannia. The Roman writer Fronto observed that, in the reign of the emperor Hadrian (AD 117 - 138), large numbers of Roman soldiers were killed by the British.
The British problem was of deep concern to Roman central government. Thanks to a tombstone recovered from Ferentinum in Italy, we know that emergency reinforcements of over 3,000 men were rushed to the island on "the British Expedition", early in Hadrian's reign. The emperor himself visited the island in AD 122, in order to "correct many faults", bringing with him a new legion, the Sixth.
The fact that they took up residence in the legionary fortress of York suggests that the "great losses" of personnel, alluded to by Fronto, had occurred within the ranks of the Ninth.
It was the Ninth, the most exposed and northerly of all legions in Britain, that had borne the brunt of the uprising, ending their days fighting insurgents in the turmoil of early 2nd Century Britain.
The loss of such an elite military unit had an unexpected twist which reverberates to the present day. When the emperor Hadrian visited Britain at the head of a major troop surge, he realised that there was only one way to ensure stability in the island - he needed to build a wall.
Hadrian's Wall was designed to keep invaders out of Roman territory as well as ensuring that potential insurgents within the province had no hope of receiving support from their allies to the north. From this point, cultures on either side of the great divide developed at different rates and in very different ways.
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The ultimate legacy of the Ninth was the creation of a permanent border, forever dividing Britain. The origins of what were to become the independent kingdoms of England and Scotland may be traced to the loss of this unluckiest of Roman legions.