[wombatsSAR]

One of the things I see lacking with the stealthy armies is some equivalence to an ambush. Sure, one can try to sneak some army around behind enemy lines and then pop-up and attack, but the attack is just another set piece attack as any other. This is not how a stealthy army would attack. I would like to see would be some level of "ambush" capability. Basically, it would be similar to the "wolves from the woods" sort of attack that the ***** queen gets or it could be some number of moves during which the enemy army doesn't get to attack or maybe some combination of the two. This is not to say that it would be an automatic attack in this manner - the level of surprise should be moderated by ... the number of scouts with the army, the number of light troops/light cav - historically, that was one of their big jobs: being the screening force. For a prepared force, the ambushing army ends up in a setpiece battle - or maybe even counterambushed, or it just cuts down on the turns of inactivity by the prepared force.

For the more typical ICU/UC me battles, a stealthy force could be added either from the side, or again, a couple of turns of combat with no response (rather, in this case, I think I prefer the side attack option). If the stealthy army is spotted, it is either just shoved in with the other army or it gets attacked separately.

For a "pie-in-the-sky" implementation, the stealthy army could have an option to "raid" as an order, with a corresponding "brigands or raiders in province X" report on the message screen. Another additional order would be "Harass" wherein the stealthy army tries to pick-off stragglers from the opposition. This could be literally losing some troops or it could mean loss of supplies in a province. As a balance to these orders, I'd suggest the stealthy army be easier to counter attack when executing these orders - they have a higher profile.