I have read that the AI of Shogun was able to learn the shinobi rush tactic from the player: the AI would never use it unprompted but if the player started doing it, the AI could do it also (because the AI would be able to see all units, including the player's spies and assassins). But I have never seen solid proof of this, and it sounds as something extremily difficult to program.

Also, if this were true you would expect the computer to keep logfiles of strategic events. Does the computer do that?