Battle of Octodurus

The Battle of Octodurus took place in the winter of 57–56 BC in the Gallic town of Octodurus in what is now Martigny, Valais, Switzerland. The battle was the result of a Roman attempt to open the Great St. Bernard Pass over the Alps. It was a Roman victory, but the ferocity of the fighting ended with the Roman legion moving back out of the Alps.

When Caesar was in Gaul he sent Servius Galba with the Twelfth Legion and some cavalry to Gallia Transalpina, into the country of the Nantuates, Veragri, and Seduni.
His purpose in sending this force was to protect the Poeninus Pass over the Alps. Roman merchants could travel over the pass, but were sometimes attacked and were forced to pay tolls to the mountain tribes.

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