when was he appointed as one?
1354
Bertrand du Guesclin
Du Guesclin was knighted in 1354 while serving Arnoul d'Audrehem, after countering a raid by Hugh Calveley on the Castle of Montmuran. In 1356–57
when did the battle of pontvallain take place? 4 December 1370 who battled against whom? French army and  English force. who led the former? Bertrand du Guesclin who won the battle? The French army. has the leader of the army been honored with any rank? Yes, he was a Breton knight.
wiki:24552154
Bertrand du Guesclin [SEP] Knight
Du Guesclin was knighted in 1354 while serving Arnoul d'Audrehem, after countering a raid by Hugh Calveley on the Castle of Montmuran. In 1356–57, Du Guesclin successfully defended Rennes against an Breton-English siege by Henry of Grosmont, using guerrilla tactics. During the siege, he killed the English knight William Bamborough who had challenged him to a duel. The resistance of du Guesclin helped restore Breton-French morale after Poitiers, and du Guesclin came to the attention of the Dauphin Charles.