Qs about allying to guard

[commisar antoni]

do you know who and how many poeple can ally to guard?

[omega the end]

Witch hunters, Deamon Hunters, and Space marines(but only in fluff I think)

[Penitent]

Well any Imperial organisation in theory, they may fight alongside xenos races such as Eldar in times of mutual desperation, although that would be exceedingly rare relative to the number of occasions they are enemies. In terms of rules, the Inquisition codexes have units that you can use in your IG army.

They would never fight alongside Chaos or traitor human forces, Tyranids or Orks for obvious reasons.

Now to salvage some discussion here, do you think they would ally with Tau? I doubt it actually, because Tau are well known for their propaganda efforts and might try to subvert the guardsmen whilst fighting alongside them. Tau, unlike Eldar, are sceptikal of Chaos and would probably be of no use anyway, whilst Eldar Farseers would occasionally be able to seal chaos gates, warp rifts etc, and allying to the brute strength of the Imperials benefits them both.

[Full_ork]

The Tau empire had a small war with the imperium, I don't see them teaming up anytime soon.

And fluffwise, Guard would workw ith bloodaxes, but that's about it as far as orks go.

[bahmehbah]

Guard, fluffwise can ally with, of course, any imperial army. In game terms, when using multiple FOCs you can use multiple armies I think, but probably requires opponents permission. For a single army, I'm not sure really. There are some things you can take, such as assassins, but they tend to require you have an Inquisitor too, which basically means your should go with an inquisition army in the first place, demon hunter or witch hunter.

Fluffwise for other things, I would assume they could ally with most things if it's necessary for mutual survival in a given instance, with the obvious exceptions of Necrons, Chaos and Tyranids. Orks I think can ally with them for a time, if both believe it's in their best interest. But of course this'll just end up with them killing each other anyway, since the orks are bloodthirsty, and the guard are taught to despise xenos. Tau I expect are actually one of the best allies (outside IOM of course) for IG. The reason being that guardsmen can likely be "corrupted" into believing in the ideology of The Greater Good.

[commisar antoni]

the tau belive in theb greater good and think that the empororer is a peice of crap. they want the imperium to forget the emporer and join the greater good. and wouldnt it be cool, if the nids attacked with everything they had, and all the armys had to join to defend the galaxy? traitor amongst imperials, tau alongside orks, eldar with dark eldar. necrons on their own. they dont need anybody. imagine technology created by the union? sguigoth bwith the biggest rail gun you can imagine on it? a titan with a bunch of starcannons on it? taking an eldr raider and puttin choas terms with icons on it?

and im talking rule wise.What can you take as allies?

[Tarot]

The Inquisitorial lists, and Kroot. And only limited selections from those lists. The specific rules are found in the appropriate army lists.