I'd have to say Roman Legions, once they get into your land they are hard to dislodge with that high defensive score... @ a close #2 would be Gallic Swordsman- so darn fast and hard to catch... Least with the defense of two you can stop 'em if you can hit'em- Or make'm run away atleast.
Immortals don't scare me to bad, since you can kill them with a counter attack, and even standard horse men stand a good chance of taking them.
Immortals don't scare me to bad, since you can kill them with a counter attack, and even standard horse men stand a good chance of taking them.