Here is the idea: along with Command Postures and Rules of Engagement there is another band of options that you can set for each unit: Level of Decision-Making.

Complete Centralized (CC) Decision Making is the default. With it in effect the unit acts just as in normal AGEOD games, obeying your every command if possible, with no localized initiative from the commander.
Moderate Centralized (MC) Decision Making is a slight relaxing of centralized command in favor of some localized initiative. While carrying out your orders for a particular unit, if it is set to MC the AI will take advantage of some other goal or attack only if a very compelling opportunity presents itself. Perhaps there is a unit 1/5 its strength within striking distance, or an unguarded depot, or something like that. The AI will also deviate if your order would cause it to engage a force that is clearly too strong to take on.
Moderate Decentralized (MD) Decision Making is a greater relaxing of centralized command. Instead of varying from strict commands to the unit for a target 1/5 of its power, perhaps it now will deviate if it sees an opportunistic target 1/3 or less of its power within striking distance, or a depot with a minor guard. The AI will also deviate if your order would cause it to engage a force that is reasonably too strong to take on.
Complete Decentralized (CD) Decision making is a complete relaxing of centralized command. Not complete AI takeover, but the AI has a large say in following your orders. Perhaps this would be a good level for partisans to have, for both completely unexpected rear targets but also to avoid heavily guarded targets that the AI can see it is outmatched against.
With this sort of enhancement to the game players could enhance maneuver actions, with opportunistic strikes at times, and precision-based movements at other times. It would also help alleviate the occasional complaint against whatever time frame is used in the game as being too long, since commanders can be given the leeway to respond in a more timely manner.
Enhancement to the game or unneeded complication?