The AI for battle seems pretty good but in two siege battles I had I noticed it behaved pretty odd.
In the first battle an enemy army had been sitting outside my capitol waiting for a good opportunity to attack when another clans army charged in and I was then forced to face the combined force of both their armies (fairly smart campaign AI). I was finishing off the aggressive clans army when I noticed the second clan was simply waiting back, while it seemed very smart (let the other guy do all the work) they happened to have all their units positioned on the same spot forming a random massive blob. when I finished off the first clans army the second AI's army still stood in that position for several minutes. eventually they sent forward archers, and me, lacking any ammunition to return fire with, sallied forth a single unit of suicidal ashigaru to route there archers. after the quick fight they just stood there in range of my watchtower not doing anything, slowly taking casualties but still standing there unflinching. after deciding I was too impatient to wait for the battle timer I sallied forth and won after a prolonged brutal melee which I am sure I would have lost where it not for my general.
In a later siege battle the Takeda clan took a great opportunity to attack me when I was focusing elsewhere, taking 2 and a half stacks of units, 6000+ men (great example of campaign AI), they attacked my level 1 castle garrisoned with only 1000 men. I had barely defeated the first wave when I noticed that all of Takeda's reinforcing units where blobbing together like the first battle. all of my units where at half strength low morale and no ammo and they where just watching my fort with a force of 3000 men all huddled as closely together as possible. after turning it on to the highest speed and waiting for 30 minutes the battle ended in my victory. The only explanation I can come up with is the soldiers of Takeda enjoy spooning with each other more than the chance at honorable victory over the enemy.
despite these two hiccups which I am going to assume is just some bug regarding reinforcing armies the AI both tactical and on the campaign map far outperform other TW games. even my two examples while showcasing a small issue show some small examples of the AI at work.
Is anyone else noticing anything funny or buggy with the AI though?