Aedui recruitment help

[Bactron]

Hello I have a follow up question regarding recruitment of units.
Still playing as a Aedui I own province Bellovacaea Belgae wiht the city Bratosporios and I am not able to recruit some of those neat belgae units - I am able to recruit only Batacorii (belgae spearmen) but I cant recruit Remi Mairepos (heavy cavalery), Taramannos (light cavalary) and Milnaht (longswordsmen).
Just to find out what kind of building will I need for these units in future I have used cheat to built the highest level of military builidngs in one turn and I still was not able to recruit these units. Do I have to wait on some kind of reform or something like that?

Because according to that useful map of recruitment for gauls posted by Ludens couple of posts above It should be possible to recruit all those Belgae units in Bratosporios.