ABSTRACT
The quadrangular enclosure is just like one of the Gallic sanctuaries such as Gournay-sur-Aronde which were brought to light with accuracy for the first time in Picardy. Sadly, narratives or simple references that can be found in these chronicles are exclusively about battles opposing Greeks and Latins or confrontations they had with their neighbours. Discoveries made at Ribemont-sur-Ancre are significant: they reveal the existence of a forgotten battle, which was held in the middle of the 3rd century BC. The most realistic hypothesis is that the battle took place at the foot of the installations intended to commemorate it, on the vast alluvial plain lining the river Ancre on the west side. The battlefield was carefully cleared of all that was lying on its surface. As stated earlier, it was urgent to arrange the place that was to receive all the remains of the battlefield.
