To be terse: To allow the formation number a unit is switched to to save and be persistent even after reloading the save.
Warband had a feature where you could customize what group the unit would belong to.
i.g, I can switch my companions to belong to a group called "companions"
That isn't the point of this request. The point is there are 8 banner groups, but changing into those groups gets reset after loading a save.
Companions are set on 1, infantry. They can be changed to a different formation, and upon loading the save again the companions are once again back to their default formation setting.
Warband had a feature where you could customize what group the unit would belong to.
i.g, I can switch my companions to belong to a group called "companions"
That isn't the point of this request. The point is there are 8 banner groups, but changing into those groups gets reset after loading a save.
Companions are set on 1, infantry. They can be changed to a different formation, and upon loading the save again the companions are once again back to their default formation setting.