Supercommando Codex
From Wookieepedia, the Star Wars wiki.
The Supercommando Codex was a guideline to proper Mandalorian behavior drafted by Jaster Mereel upon becoming Mandalore in 60 BBY. The goal of the Codex was to purge the dishonorable and savage ways ways that had become prevalent among them; however, a group of Mandalorians under Vizsla opposed the reforms, leading to the Mandalorian Civil War. The later Mandalorian Protectors would revive the codex in their establishment.[source?]
