The Antonine Wall history.The Antonine Wall was a Roman defensive wall which ran from Old Kilpatrick to Carriden, along what is now Scotland’s central belt. the orders of Emperor Antoninus Pius, the Roman 6th and 20th legions began building The Antonine Wall. They would complete it a mere two years later, eighteen years after Hadrian’s Wall was built. The main function of The Antonine Wall was a defensive one - mostly to offer protection from Caledonian tribes - but it may also have served as a customs station. The Antonine Wall would continue to be occupied until the late 160s AD when, under Marcus Aurelius, the Romans began to retreat to its more famous counterpart. Whilst far less well-known than Hadrian’s Wall, the Antonine Wall is still a marvel of Roman engineering and many parts of it - and some of its approximately twenty forts - can still be discerned today.