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.

I know there have been other topics on this, but I wanted to summarize and confirm.

First, some facts from the rule book:

- You can take as many Combined Arms detachments as you want.
- There is nothing preventing you from taking Combined Arms detachments from any number of factions, as long as you don't mix factions within the same detachment. Therefore, there is no need for allied detachments unless you really can't handle having to take two troop choices instead of one.
- supplements are counted being from the same faction as their parent codex.

Following on from this, here is an example of a list I would consider perfectly legal (if not very playable thanks to Come the Apocalypse rules):

Combined Arms Detachment 1:
Codex Space Marines, with some units sprinkled in from Clan Raukaan and Sentinels of Terra.

Combined Arms Detachment 2:
Codex Chaos Space Marines, Crimson Slaughter and Black Legion

Combined Arms Detachment 3:
Tyranids

What do you think, and what would you say is the difference between current RAW And actual RAI? Have I missed anything?

I don't know about the others but Farsight mentions you can only use options from one supplement when choosing an army.

idk about RAI but the RAW appear to imply that you are correct: we can take as many Combined Arms and/or Allied detachments (or neither in the case of Inquisition, etc.). What I don't understand is that the only real command benefit we get is that an unbound army cannot deny a battle forged army, and rerolling out warlord trait. I thought that there would be more information in the new book that detailed these changes.

how about dataslates? how are dataslates considered with the CA and allies? I'm asking in reference to the storm wing dataslate as it relates to dark angels.

A formation (as defined on a dataslate) is an alternative type of detachment.

NM.