Having a problem with Wood Elf Asrai Forge?

OK maybe I'm having a senior moment, but I cannot recruit Eternal Guard with shields, and various types of archers. The red text says I must build an Asrai Forge building. Thing is I have it! It's built, in the same province. I even tried garrisoning my lord inside the city which has the forge. Still no dice.

Am I missing something blindingly obvious?