Hey guys, just played a custom battle as a defender in a walled city. I gave the a.i. a full 20 stacks, 4 ladders, 4 siege towers and 2 rams. This is how it went:
So first the enemy army splits itself into two and attacks the city from 2 sides. However it cleverly decides to use all of the siege equipment on one side. So the battle begins, and the 4 ladders and 4 siege towers are moved up to my walls. The two units manning the battering rams simply sit there. On the other side the other half of the army sits still, whilst 3 units run forward and torch the gate, before running back. Once the gate burns open, the a.i. attempts to send all 6 units through it
On the other side the attackers use the ladders and siege towers to assault the walls, all bar one units, which decides to put the siege tower against the wall and then wanders off towards the two units idly manning the battering rams. They then proceed to stand there with those 2 units, which simply do a little dance with the battering rams, whilst failing to actually use them. Meanwhile the 6 unit bottleneck gets burned to death by oil, before retreating. The 3 units by the rams simple sit there. Even when I sent troops out of the gate, they fail to respond at all.
Wonderful, so 10 patches down the line, and the siege a.i. is still almost completely broken. If anyone has any different results, feel free to post them here.