Footnote 1, Chapter 4:
WEIRDO ZONE EXPLORATORY SERVICES
XENOLINGUISTICS DATABASE - REAVER LANGUAGE
3003 edition
"Ra'che'e'terrchangjon" <spelled phonetically> Title. Translates rougly to the military rank of "General," more accurately to "Organ-of-thinking warrior." Generals are the "brains" of the Reaver military, thus giving them this title is appropriate.