The Iron Havocs are the Iron Warriors' heavy-weapons specialists elevated to a grim perfection, fire-support legionaries whose discipline under fire is legendary even among a Legion renowned for its cold endurance. Arrayed with lascannon, missile launcher, and autocannon, they lay down a curtain of precisely directed fire that few advances can weather, holding their positions with a stubbornness that borders on the inhuman.
What sets the Iron Havocs apart is their absolute refusal to break, for they are drilled to maintain their fire even as the enemy closes and their own numbers dwindle, trusting the cold mathematics of attrition to deliver victory. Perturabo's doctrine treats such warriors as the anchor of any battle line, the fixed point around which a siege revolves. Through the campaigns of the Heresy the Iron Havocs proved that doctrine again and again, their disciplined barrages breaking loyalist assaults and grinding down fortifications with the patient inevitability that was the IV Legion's signature and its pride.
Order of battle
