The The Unburnt can be given the following upgrades:
- Other infantry if they are swordsmen
- Monsters and Cavalry if they are pikemen
- Buildings if they are cavalry
The unburnt are the Elite Infantry of Ered Luin. They are significantly more expensive than guardians, but their function remains much the same. The Unburnt are a hardy group of infantry who have advantages against spearmen or heavy infantry. While they don't have a speed-boost like other Ered Luin infantry, they do have a charge attack that lets them rush into battle and break up the place.More important than their fighting prowess, even with their upgrades, is their ability to be paired with travel ponies to come back as veterans of Khazad-Dum, which is the common heroic unit of the dwarves.