How many legions are left and what is the status of them?

[YianKutku]

I think the limiting rule is Garlean citizenship, not race. As all Garlean conscripts are offered citizenship after 10 years of loyal service. So by serving faithfully can grant citizenship and then by extension allow for promotion to legates.

The bio blurb for Asahi in the second lorebook says that his rank of "sas" is "the highest achievable by provincial citizens". "Province", when uses in the lore, has consistently meant the territories conquered by Garlemald after they became an Empire. (An example is Rhitatyn's blurb in the first lorebook.)

So even citizens who are not "Garlean" can only rise to the rank of "sas".