Dark Angels, White Scars and the Emperors Children all set for their markings in the days of the Horus Heresy with new massive transfer sheets. Of course they can be used for your 40k armies as well as the Horus Heresy, so lets see the new sheets.
Here is where to go to get them!
https://www.forgeworld.co.uk/en-GB/Forge-World-New