[Nocte]

The codex of war was written after Kunark, though. Otherwise, no player would have known about Kunark or Trakanon in the first place. Most of the "lore" found in these writings was players trying to write their guild into the story (prophecy of trakanon), or making stuff up that contradicts official lore (i.e. the stuff about trolls being from Kunark).

Nothing found in the codex of war has any in-game correlation to suggest it was ever officially adopted or that it exists as anything other than decently-written (if at times, inaccurate) fan fiction.