Here is another classic AI blunder:

Today i started a campaign as the scipii and was told to take Syracuse. So i assaulted the city and managed to drive into the heart of it. The greek general decided to meet mine in combat. So he ran out from the midst of his hoplites, only to catch himself on one of their sarissas. The cutscene saw him flying off a pike and killing himself in the process.

So there you go, more AI stupidity.