Auxonne is a commune in the Côte-d'Or department in the Bourgogne-Franche-Comté region of eastern France. Auxonne is one of the site…Auxonne is a commune in the Côte-d'Or department in the Bourgogne-Franche-Comté region of eastern France. Auxonne is one of the sites of the defensive structures of Vauban, clearly seen from the train bridge as it enters the train station on the Dijon–Vallorbe line railway line. It also was home to the Artillery School where Napoleon Bonaparte was stationed as a lieutenant and audited classes from 1788 to 1791.