I need some help with the rules, about how to engage units and how many dice to roll.

Black unit charge into pink unit.

It rotates to align both units.


Then you move to left (A) or right (B) to perfectly align trays (attacker decide).
Does it rolls the same number of dice on both situations and multiply by same threat? i.e. reanimates rolls 2 red dice and multiply the results by 3?
Thanks!