Board Thread:Warhammer 40k General Discussion/@comment-25977964-20150107082205/@comment-26937526-20150126215726

I do not know, If they are to fight across different galaxies they would have to get there supplies, and forces somewhere, or otherwise they would probably get weaker with every battle fought, so would their foes, but if they are to go without supplies (in a war supply lines are important or your people will run out of food, water and ammo).

So I would think there comes a point when they are at their limit, supplies have run out and they are starving, with no ammo and demoralized. Them the "natives" whom may have technology, more people or are more powerful, nothing can bring people to stand united like a common foe.

And the "natives" will be likely to know the universes that they live in well, and they can use this to the gain, (and they might have a way to stop people getting in to the universe(s) in the first place) and I mean the stuff I make up would give them a run for their money.

And it also depends what they are fighting, a foe that gets more in number from the dead world be hard, for every man dead may be a person that will turn on his/her former allies, this is one thing that zombies have, one bite and you are likely doomed to join the waking dead.

If the universe has magic it would likely be a hard fight, or a universe that is more advanced or has races that can turn allies against allies (like the Flood from Halo, the Necromorphs from Dead Space or and any with Zombies/Vampires)

stalemated