Battle-forged armies in Warhammer 40,000 consist of Detachments â groups of units who fight together and are awarded a tactical or strategic bonus for doing so. There are restrictions: often, all units must be of the same Faction, and you are limited in the number of certain Battlefield Roles you can take; but the reward of Command Points, spendable on the Stratagem of your choice, is more than worth it.Fortifications are available to select in Detachments â this bundle contains 3 Fortifications, with which to field a Fortification Network: a Void Shield Generator, a Wall of Martyrs: Imperial Bunker and an Imperial Bastion.