I find it difficult to pin the AI down to a single decisive engagement in the field. Unless the faction is very small, there will usually be at least another stack or 2 hanging around. Thus, my campaigns are usually determined by siege and sally affairs. Sally battles are unfortunately too easy to win which makes the capture of the AI large cities and castles predominant in my strategy. Id love to spam stacks of armies against similarly numbered stacks of AI but the game presents few opportunities for this with the exception of the mongols and timurids.

That being said, I will have an expeditionary army as often as possible, will not use for sieges and which I throw into every tough battle scenario I can find. Thereby ensuring a high body count of enemies and chevron gain for myself.

After retraining, the army will be sent to another equally impossible feat. This becomes at least in my imagination the "decisive engagement" and becomes quite entertaining as I try to test the limits of this small 1 stack force against any faction possible. More a sophisticated raiding party than anything else, they usually travel by boat ensuring mobility and the prospect of catching large enemy concentrations with "their pants down."