This is something I was thinking on the other day myself. I don't want to leave the army in tow even though that does make good sense because it can get very messy to split the player's party and then remerge it later. I may give this a shot, but it can have undesired results. Keep in mind that once a party is not under -your- control it is controlled by the AI and I can only give that AI so much input. Meaning it is going to do what it pleases. That may include chasing some bandit party half way across the map while you're trying to catch up or find it again.

As for disguising, this is what I had in mind. If you take a faction troop captive then why shouldn't you be able to take their uniform and use -that- as a disguise to enter town? Why not be able to disguise you and a few companions (if enough prisoners are available). I would allow such a disguise to be nearly fool-proof and would allow for later development of sabotage missions.

Reducing your party sizes does natively already greatly increase your chances of sneaking into a town if that was not known.

Hi there Windy. Some similar suggestions about sneaking are written in my ticket "Banditry expanded" :) I'll try to make it related to this Ticket, although I dunno how... yet! :)

could a collection of disguises be made?
i.e. you have 3 prisoners from the rhodok's... you are able to talk to them and take their uniforms to add to your collection for future use.
perhaps doing so reduces them to base troops, so you don't get as much when selling them or recruiting them.

I would be okay with allowing a collection to be made, but I would probably make it a chance of acquiring a usable uniform from a prisoner. Considering it finding one that fits. I would also make that collection get lost if you were taken prisoner. Having the option to easily break through enemy lines could be quite powerful once the ability to sabotage cities becomes available.

yes, I agree... and maybe have maintenance costs associated with them to keep them functional.
maybe have these as actual inventory items that you can store in castle chest if you want to keep them safe.
thus only losing that 1 disguise when caught.

would it be possible to change the infiltrating some...
if caught... when you fight free and win, you have 50/50 chance of fighting your way into the town or fighting your way out ?
also, getting caught puts that town on alert making any future attempts harder to do for a month.

question : is there a way to increase guards for such attempts based upon garrison size?
i.e.
garrison of 100 or less = 1 guard
200 = 2 guards
1000 = 10 guards
etc

an expansion off this.... the higher tiered the unit the better chance to sneak in. as well as the higher tiered the unit the higher chance that they will resist giving you their uniform... i.e. ruining the disguise.

names can be generic or exact...

i.e.
Rhodok T1 Disguise or Rhodok Militia Disguise