Editing Army compatibility between Warhammer settings (section)

==Some details==
*Age of Sigmar did a lot of renaming to old factions, as well as mix and match certain armies to fit the new lore. Thus, it's important to check the various battletomes to see if WHFB units have rules in AoS and in which faction.
**Cities of Sigmar is where pretty much all the Empire models (and High & Dark elves, and regular Dwarfs, and whatever survived from Bretonnia...) ended up. It's a collage of old armies on the side of Order all together.
**Chaos Daemons is divided into multiple battletomes in AoS: Blades of Khorne, Disciples of Tzeentch, Maggotkin of Nurgle and Hedonites of Slaanesh.
**Most of the Warriors of Chaos are now either in the Slaves to Darkness faction or in one of the other god-aligned Chaos Alliances.
**Chaos Dwarfs are now the Legion of Azgorh.
**The Beastmen are now the Beasts of Chaos, which also includes the Dragon Ogres (renamed Dragon Ogors) from the Chaos Warriors list.
**The old Orcs and Goblins are now multiple armies of Destruction, the Gloomspite Gitz and the Orruk Warclans. The Orruks used to be split among other factions, but were consolidated.
**The old skeleton warriors and vampires from the Vampire Counts are renamed to Soulblight Vampires.
*The Chaos Daemons in general are the most versatile faction of all, since they can be played in all settings. In contrast, almost all 40k armies (and some of the AoS ones) are only playable in their own setting. The division between the sci-fi 40k and the low/high fantasy makes this inevitable, though the shared realm of Chaos makes Chaos armies able to share certain units.
*At the opposite end of the spectrum, 40k has the most squatted armies with one army no longer being playable in its setting in any way (the squats, obviously). Though, if you look at it from a transition perspective, AoS squatted both Bretonnia and the Tomb Kings in its move from WHFB, so you make the call. 
**However, the Squats have made their return as the Leagues of Votann
**While Bretonnia and the Tomb Kings "''technically''" have rules for AoS, they were pretty much there as a quick "Warscroll Compendium" to give their player some solace for the transition, which won't get any updates ever, so they are ''de facto'' squatted in AoS, and there's little to no hope to see them in Age of Sigmar 2nd Edition. Still, until then, they can be played with official rules, so they count as playable.
***Though the Legion of Azgorh and Tamurkhan's Horde armies got rules via Warhammer Legends, these rules are considered obsolete since GW does not update them unless absolutely necessary (i.e. Keyword breakage or new units getting squatted) and are require permission in order to be playable.
*The Adeptus Mechanicus used to be divided into two factions, the Skitarii and the Cult Mechanicus, but since that divide was solved in 8th Ed. (and let's face it, there was no reason to keep them separate), they count as a single faction on the list. 
*Likewise, the Imperial Agents used to include Sororitas, Inquisitors, Astra Telepathica, the Assassinorum... but since they all had their own armies separately afterwards, they are counted as such. 
** However, tenth edition seems to be bringing them back into their own.
*Solar Auxilia have the unique spot of only being available on HH and not on 40k, understandably so due to the lore. You can get round this by playing the as a custom Imperial Guard regiment in 40k as they share a lot of equipment and are still mainly humans with Lasguns, but since they have no official rules for them in 40k they are not included on the list.
*In a somewhat similar spot to the Solar Auxilia, Cathay has been confirmed for The Old World and is the only faction so far that has no (public) rules for Warhammer Fantasy making it the only "Fantasy" army with no backwards compatibility with older editions of Fantasy. It may see rules for Age of Sigmar, likely to add variety to Cities of Sigmar or maybe to expand those dragons Sigmar is friends with, but for now it is only confirmed to be playable in The Old World.
*It should be noted that the old Realms of Chaos supplements actually encouraged battles between Chaos Fantasy and 40k armies (and others to a lesser extent).
*If you are feeling particularly talented you can attempt to kitbash CoS/IG into looking Steam-punk like, since both universes have civilizations which are more or less in the same upper/lower (respectively speaking) technological level, having a heavy emphasis in ranged weaponry and weapons teams, really, we wish GeeDubs could give us a supplement to use CoS models into 40k or something, same with Chaos Cultists and what not, [[Awesome|maybe multi-option kits?]]

[[Category:Warhammer Fantasy]]
[[Category:Age of Sigmar]]
[[Category:Warhammer 40,000]]
[[Category:Games Workshop]]