Every physical battletome now contains a unique single-use code on the back page.

: For factions that have not yet received a 4th Edition Battletome, Games Workshop provides free "Faction Packs." These include all warscrolls and army rules needed to play until a physical book is released. Battlescroll & FAQ

The modern way to access rules digitally is through the .

is available for free, covering movement, combat, and general game mechanics. Faction Packs (Indexes)