Nations with weakest troops

[Kuritza]

I would argue about Caelum's troops. Of course, when you set them on 'guard commander', iceclads get better. Instead of being completely useless, they become semi-decent, still being prone to rout and rather squishy even in a cold domain.
But even then they are extremly hard to mass and not cost-effective. I'd take independent heavy infantry over iceclads any day.