- Effective against Infantry. - Equipped with otherwise forbidden or proscribed weaponry from the Age of Strife. - Destroyers are a relic of the Horus Heresy that only the Imperial Fists Legions and the successors use in M42; their formations not updated to the Codex Astartes standards and thus their forbidden doctrine not accepting any attaching commander. - Due to their combat effectiveness, they were considered a necessary evil by Imperial commanders. - They employ radioactive, biological, or other horrific methods of death. - Legacy of Dorn: Imperial Fists Destroyers form small squads, but all members can upgrade their weapons. - Elite squad, chosen from the ranks of veteran devastators for the usage of experimental weapons. - Fanatically Stubborn: Difficult to break; even broken Imperial Fists do not retreat, but fight harder to the last man. (Requires Siege Control.)