 This would suggest that the Carroccio was placed on the edge of a steep slope, so that the imperial cavalry, whose arrival was expected along the course of the Olona river, would be forced to storm the center of the army of the Lombard League going up the hollowing.Considering the phases of the battle, this could mean that the famous battle may have also been fought on "sangiorgese" soil near the "Costa San Giorgio", quartier belonging to municipality of Legnano, or on the territory of today's "San Martino", another quartier belonging to municipality of Legnano, not being detectable, in other parts of the area, a hollow with these characteristics.Federico Barbarossa's army then came to the other side, from Borsano