of science and culture on his own terms though, especially during his time in Burgundy, under the influence of Mary of Burgundy). Although the two remained on good terms overall and the emperor encouraged Maximilian's interest in weapons and the hunt, as well as let him attend important meetings, Frederick was horrified by his only surviving son and heir's overzealousness in chivalric contests, extravagance, and especially a heavy tendency towards wine, feasts and young women, which became evident during their trips in 1473–74. Even though he was still very young, the prince's skills and physical attractiveness made him the center everywhere he went. Although Frederick had forbidden the princes of the Empire from fighting with Maximilian in tournaments, Maximilian gave himself the necessary permission at the first chance he got. Frederick did not allow him to participate in the 1474 war against Burgundy though and placed him under the care of the Bishop of Augsburg instead. The Duke of Burgundy, Charles the Bold, was the chief political opponent of Maximilian's father Frederick III. Frederick was concerned about Burgundy's expansionist tendencies on the western border of his Holy Roman Empire, and, to forestall military conflict, he attempted to secure the marriage of Charles' only daughter, Mary of Burgundy, to his son Maximilian. After the Siege of Neuss (1474–75), he was successful. Perhaps as preparation for his task in the Netherlands, in 1476, at the age of 17, in the name of his father, apparently Maximilian commanded a military campaign against Hungary – the first actual battlefield experience in his life (command responsibility was likely shared with more experienced generals though). The wedding between Maximilian and Mary took place on 19 August 1477. Reign in Burgundy and the Netherlands Maximilian's wife had inherited the large Burgundian domains in France and the Low Countries upon her father's death in the Battle of Nancy on 5 January 1477. The Duchy of Burgundy was also claimed by the French crown under Salic law, with Louis XI of France vigorously asserting his claim through military force. Maximilian at once undertook the defence of his wife's dominions. Without support from the Empire and with an empty treasury left by Charles the Bold's campaigns (Mary had to pawn her jewels to obtain loans), he carried out a campaign against the French during 1478–1479 and reconquered Le Quesnoy, Conde and Antoing. He defeated the French forces at the Battle