In the Codex Alera books, the Knights are grouped by element, each with a special name, like Knights Aeris for the knights that use wind.
- Earth: Terra
- Fire: Ignus
- Wind: Aris
- Metal: Ferris
Waht are the names given to Water and Wood?
Note: In Chapter 47, Furies of Calderon, the term used for knight controlling wood furies is Knights Fauna. Everywhere else the term is Knights Flora.
The first book in the series appears to mention Knights Fauna, but this appears to be a mistake. Every other reference in the series mentions Knights Flora.