Arrière-ban, in French customs, is a general proclamation whereby the king summons to war all his vassals and their vassals. To the Provost of Paris belongs the convoking and commanding of the arrière-ban.
arrière-ban meaning: /ar-ē-er-banˈ or -bãˈ/ (historical) noun 1. A feudal sovereign's summons to all freemen to take up arms 2. The army thus collected ORIGIN: OFr ariereban , from OHGer hari ...