The Supercommando Codex was a guideline for Mandalorian behavior, created by the Mandalorian soldier Jaster Mereel, upon his ascension to the role of Mand'alor in 60 BBY. A man with strong ethical principles, Mereel found that many Mandalorians of his era had become dissatisfied with the dishonorable and overly savage ways that had become prevalent among a number of the culture's members. Mereel became a reformist, who sought to restore honor to the clans and reinstitute the old warriors codes that had been largely forgotten over time. To that end, Mereel revived and modernized the ancient Canons of Honor that the Mandalorian Crusaders and Neo-Crusaders had followed, creating a series of several hundred commandments governing moral Mandalorian behavior, which he entitled the Supercommando