The Battle of Harz took place in 1472 between the forces of the Order of Reason and the army of Tezghul the Insane. While many had challenged Tezghul's reign of terror, including the First Cabal, none had been able to stop him from slowly cutting a swath through Central Europe, from Lithuania to Germany. The Iron Hounds managed to slow but not stop his progress towards Berlin in early 1472.
In June of that year Magistrates Roland Hoffmann and Georg der Tapfere lead the Artificers, Cosians, Die Wolffgilde and a huge mortal army against Tezghul and his forces. Fighting lasted for three days with heavy casualties, but in the end Tezghul and Hoffmann were both slain.