Quote Originally posted by VoodooChild:
Yes I have and they are indeed effective. My strat is to have my Kensai run across and circle around to the rear of the defending archers. The defending melee units will give chase and end up out of position to contest any other crossings.

I also love Kensai for castle assaults, where before I would sacrifice a YA unit to dry out the defending arrow supply. Now I just charge in with the Kensai.
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Kensai work great in bridge crossing. I just send one or 2 to the other side, and let my arcers pick off the ones they do battle with.