Although a Franco-Scottish army was successful at the Battle of Baugé (1421), the humiliating defeats of Poitiers (1356) and Agincourt (1415) forced the French nobility to realise they could not stand just as armoured knights without an organised army. Charles VII (reigned 1422–61) established the first French standing army, the Compagnies d'ordonnance, and defeated the Plantagenets once at Patay (1429) and again, using cannons, at Formigny (1450). The Battle of Castillon (1453) was the last engagement of this war; Calais and the Channel Islands remained ruled by the Plantagenets.