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So I recently saw a post about how Tau and FE cannot ally together using the ally matrix, does that mean my Dark Eldar and HC cannot ally together?

gummyofallbears wrote:
So I recently saw a post about how Tau and FE cannot ally together using the ally matrix, does that mean my Dark Eldar and HC cannot ally together?

Tau and Farsight Enclaves can ally together as Battle Brothers with no problems. HOWEVER, an Allied Detachment must always be a different Faction from your Primary Detachment... i.e., has to be different from your Warlord. A lot of people can't get past 6th Edition and still seem to think that whenever the rule book talks about allies, that it's talking about taking an Allied Detachment. These people are wrong.

So, this army is illegal since your Warlord and Allied Detachment would be the same Faction...

Tau Empire Combined Arms Detachment (Faction: Tau Empire)(Warlord is in here)
Farsight Enclaves Allied Detachment (Faction: Tau Empire)

This next army is legal since your Warlord is a different Faction from the Allied Detachment...

Inquisitorial Detachment (Faction: Inquisition)(Warlord is here)
Tau Empire Combined Arms Detachment (Faction: Tau Empire)
Farsight Enclaves Allied Detachment (Faction: Tau Empire)

Your Dark Eldar and Harlequin Covens work exactly the same way.

Please try to remember that this isn't 6th Edition anymore. Allied Detachments and allying as Battle Brothers are two entirely different things.

You misunderstand the original post. You can ally Farsight Enclaves and Tau Empire detachments/formations. What you can't do is take an Allied Detachment from the Farsight Enclaves codex with a Primary Detachment from Codex Tau Empire, because the Allied Detachment is forbidden from being from the same Faction as the Primary Detachment. The same applies with the Dark Eldar and Haemonculus Covens codices. They're both the same Faction, i.e. Dark Eldar.

Hm this ad confused me. Did they make an excetmpion for Space Marines or does the 6th e d thing not work?

 arinnoor wrote:
Hm this ad confused me. Did they make an excetmpion for Space Marines or does the 6th e d thing not work?

Codex: Space Marines has been specifically FAQed to state they can be taken as an Allied Detachment alongside a primary Space Marines detachment, provided they have different chapter tactics.

Well that is silly.

It should be noted that you cannot take an HC ally detachment anyway since they have no troop selections. Though talking HC as the primary would prevent taking DE as ally. You could just ignore this rule if playing itc format or taking the special detachments, only the ally detachment is at issue.

 deevil wrote:
Though talking HC as the primary would prevent taking DE as ally.

Why?

If you took any of the Harlequin detachments/formations (and took one of the models in one of them as your warlord) there's nothing preventing you from taking a Dark Eldar detachment/formation of some kind in the same army.

 chelsea_hollywood wrote:

 deevil wrote:
Though talking HC as the primary would prevent taking DE as ally.

Why?

If you took any of the Harlequin detachments/formations (and took one of the models in one of them as your warlord) there's nothing preventing you from taking a Dark Eldar detachment/formation of some kind in the same army.

The "HC" they are talking about isn't Harlequins (which are Faction: Eldar Harlequins), they are talking about Haemoculus Covens, the supplement for Dark Eldar. Models from the Haemoculus Covens book are still Faction: Dark Eldar.

So factions are more or less the overall codes and it's supplement s. Well we have been doing it wrong then.

 arinnoor wrote:
So factions are more or less the overall codes and it's supplement s. Well we have been doing it wrong then.

Correct.

Any book with Supplement in the title shares the same Faction as its parent codex.

Iyanden is Faction Eldar
Farsight Enclaves is Faction Tau Empire
Black Legion and Crimson Slaughter are Faction Chaos Space Marines
etc, etc

awwwwwwwwwwwwww, really, I'll just houserule it in my FLGS, because I almost never play in tournaments so its not an issue for me.

You can just take 2 CADs though, 1 FE one Tau (or 1 DE and one HC)

Yeah, it's a minor stumbling block, that almost never comes up for us. (DE.)

 extremefreak17 wrote:
You can just take 2 CADs though, 1 FE one Tau (or 1 DE and one HC)

Small point, but Haemonculus Covens states:

"If you use the Formations or the Covenite Coterie Detachment in this book, the following supplemental special rules apply to all of the units they contain"

So strictly speaking you can't run a Haemonculus Covens Combined Arms Detachment, although you can of course run the Covenite Coterie or other formations as non-Allied Detachment allies

 Mr. Shine wrote:

 extremefreak17 wrote:
You can just take 2 CADs though, 1 FE one Tau (or 1 DE and one HC)

Small point, but Haemonculus Covens states:

"If you use the Formations or the Covenite Coterie Detachment in this book, the following supplemental special rules apply to all of the units they contain"

So strictly speaking you can't run a Haemonculus Covens Combined Arms Detachment, although you can of course run the Covenite Coterie or other formations as non-Allied Detachment allies

Covens has no Troops, so you couldn't run CAD to begin with.

Covens also has no units at all. It's a book of formations and detachments for Dark Eldar.

Isn't it like Black Legion that get to use an allied detachment with CSM despite being the same faction?

Roknar wrote:
Isn't it like Black Legion that get to use an allied detachment with CSM despite being the same faction?

It is exactly like Black Legion who also can't use an AD with a CSM CAD.

 FlingitNow wrote:

Roknar wrote:
Isn't it like Black Legion that get to use an allied detachment with CSM despite being the same faction?

It is exactly like Black Legion who also can't use an AD with a CSM CAD.

It's how my group plays it. It 's how we treat the allies rule. The BRB says they're the same faction and then we interpret "can ally with" as "can use an allied detachment with".
I've never actually done it, partly because it's shaky reasoning at best, but yea

Can ally with means can ally with. So you can take multiple detachments in a mix of CSM & BL. You certainly can't take an AD of something with the same faction as your primary.

Yea but everything can ally with everything in that sense. and since the various marine codices can do it, we figured we might as well treat the chaos supplements the same way. Granted it's not the same thing but meh.
Though I probably shouldn't have commented it, since it's really a houserule. I just forgot about that part lol. So apologies for that

Remember the Marine Codex has specific permission to use the AD with different chapter tactics which helps illustrate that RaI is that only Marines get this as they are specifically called out and other incidences are not.

Space Marines can take an Allied Detachment of Space Marines with different Chapter Tactics because the Codex Space Marines FAQ specifically says that they can. That makes them the exception to the rule.

I meant Blood Angles and their ilk. They are still individual factions right?

Yes

We felt it was more in line with current intent, now that supplements seem to have died completely and everyhting is getting a codex that is it's own faction, but I digress. House rule remains house rule and I shouldn't have brought it up.