Vol V Chapter 31

In Baron Dahl's battle plan, the tribal chief and the Gnome Shaman posed the greatest risk in this tribe of gnomes. These two fellows were not only outstanding in their martial power, but they were also even more outstanding as leaders and auxiliary soldiers. With their leadership, even ordinary gnomes would see a great boost in strength. Those that were not weak to start with, like the gnome hunters, gnome warriors and gnome archers, would experience a further increase in strength. They would become so powerful to the point where normal soldiers would not be their match at all. 

Of course, Baron Dahl would also have men who could command as leaders and serve as auxiliary soldiers. But their "professional" ability was much weaker than that of the tribal chief and the Gnome Shaman.