Unable to train certain units

Playing as the French, I upgraded to Citadel, Lord's Stables, and the highest Jousting list and still I was unable to train Geandarmes (I'm sure that I slaughtered the spelling :D). What else do you need to train them? Can you even train them on the campaign map?

This is probably a dumb question, but I need to know.

Thanks,
Vuk

Don't you have to wait till it's the Late Period or something like that?

You need a Military Academy at the highest level.

Thanks! What is a military academy? I didn't see it among the buildings...

Military Academy is in cities not in castles. It is the highest tier military building. It costs 10000 I think.

Can only train them in Huge cities with Military Academy.