@Leenday - Total War actually does a horrible job of anything but the actual set piece battle once all is set up. WW2 is the same. If we want to do set piece battles where no manoever was carried out. We could use total war.
However a lot of Napoleonic battles especially has such huge numbers in them that troops arrived and deployed on the battlefield slowly. Maybe according to a plan and maybe not. At waterloo of course a fair number of the French army was chasing the prussians in a nearby but many miles away battle of it's own.
At Jena/Audenstadt (spelling) iirc the men took the whole morning to cross and build up on the islands between the main battlefield.
Total War battlefields are tiny, compare them to a game like say, ultimate general civil war or scourge of war and you will see what I mean. 2000 in total war is nothing compared to the 300,000 men that sometimes deployed in these battles. Total War is much more arcade game now than a proper fully featured at least semi realistic wargame I had hoped it would turn into and keeps heading down that path. Total war has never allowed us to fight anything other than set piece battles with virtually no manoever. You know where you will be flanked, you know where the enemy are. They are generally right in front of you and that is what eventually made it boring for me.
This engine could take a napoleonic conflict to a whole new level. Scourge of War and Ultimate general are either too stylised or have very bad engines and interfaces to be enjoyable. The polish of scourge of war in horrible to say the least, it barely functions.
Cavalry and flying horse artillery would actually be useful. Civil War battles were also very similar in napoleonic ones from the respect that often units arrived throughout the day piecemeal. Manasass is a good example iirc. A lot of games simply do not have enough room at the edges to play flanking or anything else with. I am yet to see a game that is not within 300m of seeing any flanking move or if the enemy are hiding. The wargame series maps would be big enough to allow proper planning and an engagement would not take place for a while in the further back SD44 mode... the closer combat one would be a set piece battle though.
So you see. Armies did not simply line up and shoot at each other, much manoever was to be had. Many regimental or company sized cards could be made. Although I admit a lot of work on soldier numbers and capacity would have to the engine I guess.
Forward facing square
Column of marie louise
Line - types of line that units are capable of different thickness of line 2 -3 -4 ranks etc
Lay down command
Move units together formed up in battalion or regimental square
All sorts of possiblilities
Proper historical deployment time and drill sequence could be chosen to determine whether a unit does this well of fails moral check.
Medieval like pikemen for the russians
Officers and whether to attach them to units
Musicians and whether to attach them to units
Grenadiers companies - forming them together or not?
Dragoons - dismount - types of mounts used
Light Cavalry - scout ability
Cossacks - scout ability
Engineers with boats
Townspeople with boats
I could go on. You could even impliment a time delay for couriers and intel to the generals character on the field. In scourge of war you could intercept these couriers, technically if wargame did a 17/18/19c game you could impliment a fog of war even for your own units if you do not keep into with them, they would fight, but only with the officers attributes and AI contro, to have control you would need couriers to keep contact or other units nearby? Loyalty could be a thing for units like cossacks. Forced march abilities and road quality would be a thing at these ranges. Troops ability to do this, all sorts of new factors. Perhaps even preparing ground.
Fix bayonets could be an order? Decreasing accuracy. You could still have phase A B and C to make sure people did not simply recon with their whole army?
Besides 20 player napoleonics... can you imagine! Plus it would be slow enough even for old timers I reckon. Because one shot kills like we have with tanks would not be common. Plus like steel division moral or surrender is more of an issue than actual units completely dying.