Once AI military units are attacking a target (such as a building), they will never stop attacking it for any reason unless directly threatened.

The only time they will hunt predators I when their villagers are being attacked by wild animals, however, they will still not attempt to gather food from them. AI do not hunt elephants and will not gather food from predators such as lions and alligators even if they have been hunted down.Later in a game AI will not build storage pits/granaries next to resource sites, but will instead gather resources as far away as they can.Despite this, the player can exploit this weakness by repeating the same process to destroy other buildings of the same type, while preventing the AI from completely building a new one, until the AI stops to build that specific building type throughout the game. However, if the AI builds that specific building type in multiple numbers, and gets destroyed before completion, the AI will have a reduced number of that specific building type (e.g., the AI has four Siege Workshops, then the player destroys one and then destroys the foundation of the Siege Workshop with which to replace the one destroyed, the AI will only have three Siege Workshops). If the building being constructed has been destroyed before completion, that specific building type will no longer be attempted to be built by the AI.

AI will often reconstruct a recently destroyed building near its previous location, even if the area is controlled by the enemy.

AI will keep sending their villagers to repair damaged buildings/towers/walls until the building is either fully repaired or destroyed, even if it would be foolish to do so.

The space occupied by all of their buildings will often be a rectangular ring surrounding their Town Center if there are no natural obstructions.

AI will almost always construct most of their buildings at a certain distance away from their first Town Center.

With the exception of Campaigns and custom scenarios, AI will continue to build villagers/fishing vessels until they have about 30 or so.

Scouting villagers will continue their job indefinitely until their death if they are able to effectively dodge range attacks.

AI will often send their villagers to scout the map early in the game and will continue to do so late in the game even after more capable military units suited for the task are available.

This is common at the Scenario Editor under the default personality. If AI does build walls, it will only be a short segment. The AI in Age of Empires and The Rise of Rome has several notable traits, including:

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