 After the death of the Count of Eu, Sancerre was made Constable of France on 26 July 1397.In 1398 Sancerre lead an army against the captal de Buch and the count of Foix and, after a campaign during which he took several towns and castles, successfully negotiated with them to leave the English camp and to submit to the French King.In 1401 an ailing Sancerre resigned as Governor of the Languedoc.