evolution of an armoured division

[Legbreaker]

T2K, as far as I'm aware, doesn't provide much in the way of unit information beyond troop and tank/AFV numbers. How they're organised within the unit is left almost completely alone.
It's very likely that experience and the dictates of a low manpower, limited resource environment will require reorganisation - take the US 8th ID as an example.

None of that really matters that much though, as PCs are unlikely to ever need to know much beyond their immediate surroundings. If a pre-war UK Armoured Division now has no tanks, a quarter of the manpower and is foot and horse mobile, it really doesn't matter that much - all the PCs need to know is they're in the company of UK soldiers who walk or ride horses.

Only in the big picture does any of that really become interesting, let alone required knowledge. Only the Officers above Lt Colonel really need to worry about any of that, a rank most PCs are unlikely to meet, let alone be.