You think you know almost everything Warmaster might throw at you and then there is another new thing!
In this instance a brigade of three units was hit by an Orc spell Gotcha! 30cm range, it hits all 3 units in the brigade.
After rolling to hit and saving we rolled for drive back and as luck would have it the nearer the unit was to the shaman the further it was driven back.
First question, the wizard is in direction blue arrow and is the only shooting unit.
Whilst the rules state driven back there is no implied direction, are we correct to think the unit goes back towards its own rear as per left image or moves directly away from the direction of the shooting unit?
Second question as the front [buff] unit has to move 10 cm, we assumed the whole brigade would move 10 cm. Should we move them in some other formation or way?
We couldn't decided in which order it was best to move the units, however.
Final Question, Although Orange might move first we must assume orange has to make way for green's drive back, and then again for green when it is driven back by buff.
So how many rolls for confusion?
Orange moves
Green moves and forces Orange to move
Green and Orange both roll for confusion
Buff moves and forces green to move as well as orange
Buff rolls for confusion and Green and orange roll again.

Thanks.