The Ai is pretty snazzy, despite the columns. If the formations were set up, it would be even more glorious. Here is a little run down of what I've seen.
1. The AI started in big columns, and advanced towards my position. I'm set up in a rather standard formation, archers in the back, samurai Katana in the middle with the Ashigara at the front. Oh, and my cavalry on the flanks.
2. Rather unexpectedly, the AI quickly sent its cavalry units onto my right flank:
3. This led to an attack on my right flank, which I supported with some cavalry.
4. Meanwhile, the main AI force were advancing towards me in a rather silly fashion, lots of big columns, they did start to break off a little however, going for the flanks of my lines, thankfully.
5. The result was four battle locations, 3 infantry assaults, and the cavalry attack to holding on my right. It looked like this, which was pretty cool IMO:
6. After eventually beating down the enemy units on the right, I could attack the enemies in the centre:
7. I then managed to rout them, but it was still really cool, had an enjoyable battle, had a lot more fun than the standard historical battle.
And here are some battle screenshots I took and edited a little:
Lewis.