I fail to see what renders Erinaum's military or tactics superior to those of Avalonia except possibly as a result of bias; but no matter, time may tell though hopefully not.
As permanent cities enter into Avalonia's direct control, Avalonia's dependence on Erinaum for iron goods drops significantly as local mines and metalworkers now produce iron and steel weapons/armor. Permanent settlements have also provided Avalonia with another benefit: administrators. Now, Avalonia possesses a small group of those able to read/write which set down in writing Avalonia's law code, history, memoirs of the Khan, notarized documents, &c. Nonetheless, aside from Nazgar, the majority of the Avalonian people remain nomadic rather than become citified, and the nomadic population of the steppes grows.