Sorb was a massive empire in the southern reaches of the continent across the Western Ocean from Detina, renowned for its harsh winters. Fifty years before the Detinan Civil War, Great King Kermit's armies invaded Sorb during a particularly nasty winter. They reached the great city of Pahzbull but were forced into retreat through severe winter and on starvation rations. This campaign was the turning point in Kermit's wars against his neighbors.
Sorb is based on Russia. The Sorbs are a Slavic minority indigenous to the region known as Lusatia (formerly Sorbia) in the current German states of Saxony and Brandenburg.