Quote Originally Posted by Sheogorath View Post
That is sort of present in ETW.

For instance, I believe any faction can build Highlanders if they have Scotland, and Europeans can train Sepoys in India.
Yeah. This seems to be the case, unique units are not unique to the factions, but to a province. I started a test game with Prussia and took Saxony. In that province I could create Uhlan cavalry (the Poland province seems to have access to them aswell) but I cannot do so in Berlin. The province called Prague, Bohemia and Moravia seemed to have some unique units aswell, like Jaegars and Carabineers.

So there is a good few unique unit types, you just need to hold the province which they originate from.