Dwarves from the Iron Hills aren't the richest dwarves. Their gold is sparse, and their iron is hard! For me, the Khazad Guard is simply the standing army, while your average dwarf axe carrier is a levy or bondi conscript. I painted these figs with iron chain mail to represent their lineage. These dwarves will also work well with force from Erebor after the battle of five armies, since many of the dwarves that populated the lonely mountain were from the Iron Hills.