Fighting the armies of dragons, it became more and more clear, that the dwarven forces need more structure. While the Ironhelms were very energetic and military, the Silverbeards and Mithril-born were rather cautious and defensive. Over time, some dwarves didn't feel belonging to either clan, which eventually led to the founding of new clans, for example, The Grimsleepers, The Alderfists, and The Ashforge Clan. Most of these clans reformed their government. The elders of the clan assigned the role of the clan leader (also called 'Duke') to one dwarf. The elders often kept the role of advisors. Around 11200 b. BF, there have been 8 different dwarven clans, and all of them eventually agreed to unite. This alliance of clans was led by the Silverbears, the oldest dwarven clan.