And as to the Infantry Fighting Vehicle, Infantry Section Carrier, Armoured Personnel Carrier, Troop Carrier spectrum - don't forget the advent of the Protected Mobility Vehicle
I could start with the Saxon, the Foxhound, Bushmaster, Hawkei, Dingo, ... Wheeled vehicles designed primarily to move troops on highways and hard tracks, under cover from the elements, artillery and bombing attacks. They may be pressed forwards depending if the commander ascertains that fire is effective or not, or in the absence of a better solution. But ideally I would think that in this high end conflict the role of those armoured vehicles is to rapidly move reinforcements from reserve to covered positions on the FEBA or to supply reinforcement for "proper" IFVs and ISCs.
And, when the environment permits, those light vehicles can act as scouts, patrols and light cavalry.