Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

As far as the eldar and dark eldar are concerned, they are battle brothers because as others have said, they would not stand idly by and watch another race kill eldar from another kindred (i.e. craftworld, dark eldar, exodites etc.) without interfering. They also regularly co-exist (i.e path of the outcast) and co-operate if it benefits both of them to do so.

Sure they come into conflict with eachother occasionally, but with nowhere the regularity of chaos and the Imperium. They also never engage in major wars with eachother as they don't have the need or the manpower to do so.

that's why I was thinking allies of convience... but with the large amount of evidence it seems most appropriate to make them battle brothers. ..