I took a peak into the Only War forums and found a thread started by Psion on DW and OW Joint ops . It got me thinking of how hordes would fare against other hordes.

Let's say in we are given a platoon of Regular Joe IGs to command. If we send them to face a Horde of Termagaunts. How do you determine damage as Hordes do not do magnitude damage to each other. If every 15 Damage counts as 1 point of magnitude damage then it'll really bog down the combat system.

I don't seem to recall there be rules for hordes versus hordes so I apologise if they have been published in a supplement/ corner of the rulebook I have not read. What are your opinions? Anyone ran something similar before?

Rules there be in Mark of the Xenos

Ah ha! I do not own a copy of the Mark of the Xenos but my GM does. I'll grab his copy to look up the rules in there. Thanks for pointing me in the right direction.