Regarding cav. In the Napoleonic era they should be at the Regimental level and give the user the option to separate into squadrons. More like the infantry battalions and how they split. Cav in this period normally engaged with the entire regiment either in contact or direct support and the way it is set up now the cav just does not perform correct and has no Napoleonic feel to them. Lots of time the Heavy cav was thrown in at Brigade strength that is how they could break a square.
Actually no, the 3 "base units" of the napoleoinc wars were battalion, squadron and battery.
Most cav regiments were to large, 500-1800 troopers.
2-4 squadrons usually fought to gather. Som times single squadrons.
Yes some times whole regiment did chrage to gather. But still not the main units.
Heavy cav more then light would fight in close to full regiments. (Mostly because they wee held in reserve to close to the rest of the regiment, and generally heavy cav regiments were smaller then light)
Russians light cav regiments were HUGE about 1800 at full strength( some times notecibly bigger when over strength)
They devided regiments into two battalions each of 5 squadrons. But even battalions were ofte split further.
Also whem you read cav battles and tactics, it usualy is based on 2 or 4 squadrons working in support.
A few typical/generic examples
1. One squadron attacks, gets beaten back, second squadron comes in and fights, letting first squadron collect it self and get in fighting shape.
2. One squadron attacks and pins the enemy, second flanks and attacks side or rear.
This can of course be scaled up, with many thousand cavalry troopers, but in that huge battle would be mini battles, of 2-4 squadrons