Career
In 1302, Bernard fought in Italy under the command of Charles of Valois. He then served as head of large detachments of the royal army. He contributed particularly to the victory of Mons-en-Alarcon on 18 August 1304, with four hundred armed men and a thousand policemen on foot.
The will favored the Count of Foix and Bernard refuted its legitimacy.
The conflict escalated into an undeclared war between the houses of Foix and Armagnac, which took place during nearly all of the fourteenth century.