Grenzers...how do i get em?

[Megas Methuselah]

They have no limit/unit cap. You need machine rifling. In the files, its recruitment region stated it was recruited in "grenzer." Ok, that was not entirely helpful, all it told me was that its recruitment was restricted to a certain area.

However, their unit_id calls them euro_elite_light_infantry_croatian_grenzers. Is Croatia in the game? If it is, build up your military infrastructure there. You should be able to recruit the buggers in Croatia(if it exists, if not, try the region(s) where Croatia historically is part of), and possibly the other nearby regions, as well.