[quote=gowia]
Have to agree here...I always thought that numbers wouldn't be too high since we had a max of like 6 planets...however that is a question for Omega to reply too...
[/quote]

I think it depends, more on who your playing as, because the IG can field a lot of troops and machines, but due to the process of creating more space marines, they wouldn't have too much, Tyranids, a small hive fleet can have trillons, as for Tau when out of system they mostly field auxiliaries and use those, chaos rely prominently on their human followers, and corrupted Astartes are a last line of defense. sisters of battle there aren't very many but what they lack in numbers they make up for zeal, Orks are quick to reproduce, there could literally be trillions of them confined to six planets, necrons rely only on what was sleeping on their tomb worlds,