The Legiones Astartes need no introduction the Loyalist and Traitor Legiones are the primary combatants during the Horus Heresy. Their combined arms approach and combat doctrine of shock and awe make great use of heavily armoured warriors and devastating war machines. Their Combat Force contains a wide range of iconic units, including Legion Terminators, Dreadnoughts, Rhinos, and even tanks, such as the Kratos and Sicaran.