I’d like to think I’m good with rules but this one I’ve never been 100% sure about and half those I play sees it one way and the rest the other way. Let’s set this up with the following image regarding multiple combats.
So, the Berzerkers are in a multi-combat with Devs and Tacts while the Plagues are fighting the Tacts only. If the Tactical Marines are wiped out but the Devs aren’t then it’s given that the Berzerkers pile-into the Devs, but what about the Plague Marines? This is where the divide arises amongst those I play. Some feel that it’s one big multiple combat and thus the Plagues would also pile-in towards the Devs even though they were only fighting the Tacts. Others, myself included, feel that the Plagues are free to consolidate once the Tacts are wiped out as they were not in a multiple combat. I can’t be 100% sure because it seems like a hazy rules area.
The one thing I’ve found that seems to support my thought is this on pg. 41 under Assault Results:
After all of the losing units have taken their Morale checks, any winning unit that is now free to make a sweeping advance rolls the dice and compares its total with the total of each of the falling back enemy units it was engaged with.
So, any winning unit that is now free to make sweeping advances. In order to be free to make a sweeping advance you cannot be locked in combat with another unit. Thus in the example above if the Tacts broke from combat but the Devs did not then the Berzerkers can’t try to sweep. However, from how I read this, that would mean the Plagues could try to sweep. Thus, by that thought process, if the Tacts were all killed in the combat the Plagues would be free to consolidate as they are not engaged with any other unit.
That’s what makes sense to me but I’d like to know if I’m right and if others agree then further verification to prove that point would be greatly appreciated. Likewise, if I’m wrong then let me know and provided evidence would be awesome.