Dwarf Camp and Upgrades
The Dwarven camp is, in many respects, a miniature castle. It is protected by a low wall complete with a functional gate which can be manned by Archers or any other type of unit for defence. This affords protection to these units, but is balanced by a significant weakness; the wall is low enough that archers outside the castle may be able to hit buildings in the protected area beyond. Melee units cannot scale it though: the Shadow's siege machines have not been designed to tackle this type of... short... obstacle. Still, the wall is weak, and will not require many blows from a stout ram to crack it and allow the enemy to flood the base. However, the greatest strength the Camp posesses is its ability to recieve wall upgrades, similar to those found on Gondor and Rohan Castles. Three upgrades are available to the Dwarf player.
The first is a basic Watchtower, similar to those found in other factions' camps, though sturdier in build. Because it doesn't need to be defended, it is useful for those times when troops cannot be spared to protect the Camp.
The second is the Raven Banner - the army standard of Erebor. The sigil of the Raven increases the range and damage of friendly archers. If you have garrisoned your walls with the Rakhas-udrig, this is a very useful upgrade.
The third structure is more offensive than defensive. The Roost, once built, houses a single free Raven of Erebor. I will discuss these scouting units in a future update in more detail. Ravens are useful to the player in many ways, and the one granted by this upgrade even more so. If it is killed under the player's orders, a new Raven will be provided at the Roost after some small delay. A very useful structure for any player that likes scouting.