Can I take a formation as a main detachment?

[The Harrowmaster]

IE. The air assault formation in Codex Miltarum tempestus? Does it have to be taken on top of normal F.O.C? Or can it be taken as my main detachment?

[Spaz431]

With codex MT, you can use the tempestus as your main, but it will be those three troop choice and the command with the commissar. The commissars rules dictate that If there is a model with officer ranks around he is subservient to the officer, so the single wound model becomes your HQ. I suggest them as an ally to inquisition with coteaz

[The Harrowmaster]

But a tempestor prime has 2 wounds. Also I Was intending on putting the commissar in one of the other squads. It says he has to go in one of squads.

[Dam13n]

I think the key thing here is what the wording of the Dataslate that contains the Formation is.

 

i.e. if it states that it can be used as your primary detachment, then it obviously can and counts as the required primary detachment that every army must contain.

 

The fact that a primary detachment must be taken does not change, where that detachment comes from is dependent on which codex/supplement/dataslate you are using.

[The Harrowmaster]

Yeah I think the wording has got me. It only says that you can take it as a separate detachment. So can I use this formation and have the command squad and 2 of the scions squad count as my HQ and 2 troops.

[Morollan]

Unless it specifically says that it can be taken as a primary detachment (which I doubt) then you still need a separate primary detachment of at least 1 HQ and 2 Troops from a codex (or other source) capable of allying with the faction that the formation is chosen from (usually stated in the formation rules).

[The Harrowmaster]

But if took one inquistitor from inquisition as a primary detachment, and then the air assault formation. Do the troop choices in the formation still count as scoring? 

[Kristoff]

But if took one inquistitor from inquisition as a primary detachment, and then the air assault formation. Do the troop choices in the formation still count as scoring?

Yes, unless they are Desperate Allies or have a Rule which prevents them from Scoring like Swarm or Death Company.

[The Harrowmaster]

Thanks very much guys.

[Gentlemanloser]

Ah codex inquisition. Making a mockery of the primary detachment requirement.

 

But generally no formation can count as your primary detachment. There's none that come to mind.

[Shaolin_Monkey]

You can however simply take a primary detachment from MT and take the same models as the formation. (Losing the few extra special rules but not being auto reserve)

Or you can take a hq and two troops from MT and the formation.