about the routing... I've won multiple battles due to the fact that they rout and then the enemy chases after and then they're not longer routing and successfully flank with units that are still in the field. Sort of like hit and run tactics, I find it quite nice especially if you have levy units sitting back there while they rout and just slam enemy units. I don't know, I'm a weird guy -.-
edit: My vote is kataphracts... only because I only usually play western and end up getting smashed by them late game when I'm stretching my empire east. But they are sexy for anybody else :)
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