Army compatibility between Warhammer settings

Here is a list of all armies that have been part of the many "Warhammer" settings, and in how many of them they're playable.

Disclaimer: This list takes into account the rules, not the models. For example, all elf models can be used on eldar lists as "count as", and viceversa. This list is more interested in armies that keep similar rules and named units in all settings.

• To make things easier, some factions that share a lot of similarities will be counted together. The one exception will be orc(k)s in general, due to all of them being wildly different in each setting.
• Also, this list doesn't take into account the smaller specialist games, such as Kill Team, Warcry, Warhammer Underworlds or Bloodbowl. Thus, their exclusive factions are not included here.
• While the list of the playable armies in WTOW will be almost identical, if not 100% identical to the old WHFB armies, we'll keep the TBD tag until we get official confirmation. The only exeption will be the armies that won't make sense being there (aka, the 40k ones).

The List

Army	Warhammer 40,000 (40K)	Horus Heresy (30k)	Warhammer Fantasy Battle (WHFB)	Warhammer: Age of Sigmar (AoS)	Warhammer: The Old World (WTOW)	Total games playable.
Space Marines (SM, DW, GK, BA, SW, DA)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Imperial Guard (AM, Scions)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Solar Auxilia	Non Playable	Playable	Non Playable	Non Playable	Non Playable	1
Adeptus Mechanicus (AdMech/Mechanicum)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Imperial Knights (IK)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Adeptus Titanicus (Titans)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Sisters of Battle/Adeptus Ministorum (SoB)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Talons of the Emperor (AC, SoS)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Officio Assassinorum	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Inquisition (Inq)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Squats	Non Playable	Non Playable	Non Playable	Non Playable	Non Playable	0
Chaos Space Marines (CSM, DG, TS, Traitor legions)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Chaos Daemons (CD)	Playable	Playable	Playable	See Alliance: Chaos	TBD	4
Renegade Knights (RK)	Playable	Playable	Non Playable	Non Playable	Non Playable	2
Lost and Dammned	Non Playable	Non Playable	Non Playable	Non Playable	Non Playable	0
Eldar (Cr, DE, Har, Ynnari)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Tyranids (Nids, GSC)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Necrons (Nec)	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Orks	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Tau	Playable	Non Playable	Non Playable	Non Playable	Non Playable	1
Empire of Man	Non Playable	Non Playable	Playable	See Alliance: Order	TBD	2
Bretonnia	Non Playable	Non Playable	Playable	See Alliance: Order	TBD	2
Elves (HE, DE, WE)	Non Playable	Non Playable	Playable	See Alliance: Order	TBD	2
Dwarves	Non Playable	Non Playable	Playable	See Alliance: Order	TBD	2
Tomb Kings	Non Playable	Non Playable	Playable	See Alliance: Death	TBD	2
Vampire Counts	Non Playable	Non Playable	Playable	See Alliance: Death	TBD	2
Lizardmen/Seraphon	Non Playable	Non Playable	Playable	See Alliance: Order	TBD	2
Orcs & Goblins	Non Playable	Non Playable	Playable	See Alliance: Destructuon	TBD	2
Ogres	Non Playable	Non Playable	Playable	See Alliance: Destructuon	TBD	2
Warriors of Chaos	Non Playable	Non Playable	Playable	See Alliance: Chaos	TBD	2
Chaos Dwarves	Non Playable	Non Playable	Playable	See Alliance: Chaos	TBD	2
Beastmen	Non Playable	Non Playable	Playable	See Alliance: Chaos	TBD	2
Skaven	Non Playable	Non Playable	Playable	See Alliance: Chaos	TBD	2
Stormcast Eternals	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Daughters of Khaine	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Fyreslayers	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Idoneth Deepkin	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Kharadron Overlords	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Sylvaneth	Non Playable	Non Playable	Non Playable	See Alliance: Order	TBD	1
Flesh-Eater Courts	Non Playable	Non Playable	Non Playable	See Alliance: Death	TBD	1
Nighthaunt	Non Playable	Non Playable	Non Playable	See Alliance: Death	TBD	1
Ossiarch Bonereapers	Non Playable	Non Playable	Non Playable	See Alliance: Death	TBD	1

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 alliances 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 Dwarves, 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 other one of the Chaos Alliance.
  • Chaos Dwarves are now the Legion of Azgorh.
  • The Beastmen are now the Beasts Of Chaos.
  • The old Orcs and Goblins are now multiple armies of Destruction, such as the Gloomspite Gitz, Bonesplitters, Ironjaws...
  • The old skeleton warriors and vampires from the Vampire Counts are in one of the many armies of the Death Alliance.
• While Bretonnia and the Tomb Kings "technically" have rules for AoS, they were pretty much there as a "Warscroll Compendium", 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.
• 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.
• 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.