 This new role put the tribunal of the justice of peace in the town, and the former constabulary building became a Police Station again as in the Napoleonic era.At the end of the First Empire, the wealth of "Aigrefeuille" was based primarily on agriculture.The expansion of the vineyards was so great that it became a true monoculture until the crisis of phylloxera, which reached the vineyards of Aunis in 1876.