All units belong to one of the many Factions that are fighting in the 41st Millennium. This will often be represented on the unit’s Army List Entry with a symbol, the key for which can be found to the right. A unit’s Faction applies regardless of how you choose your army, but is especially relevant to Detachments because many state that you can only include units of a particular Faction. Factions are also used when including Allies, and some special rules will apply only to specific Factions. Note that Fortifications are an exception in that, unless otherwise stated on their datasheet, they do not have a Faction.

In the case of older publications, the Faction of all the units described in a codex is the same as the codex’s title. In the case of codex supplements, the Faction of all the units described in that publication is the same as the codex it is a supplement of.

Armies of the Imperium


Forces of Chaos

Xenos Hordes