Sharazon "Paladine" Kalidas, the last of the Althari, is the ranking Commander of Arcosa (Baria), and has authority over all ofthe forces on the continent. He answers to neither Lucia Magus or to Methros. His only job is to protect Arcosa, whether that is by defending it from invasion or invading a possible threat. He has the full authority to take any army from either nation and use it as he sees fit.
He is the Kwisatz Haderach of Arcosa, and cannot be removed unless both rulers agree to do such.