Once the Elector Count of Averland,[3a] when Sigismund was elected Emperor, he renamed the city of Reikdorf into Altdorf and re-instituted the Imperial Government to the capital of the Reikland.[4a] He embarked on a grand building program within the confines of his capital city, but his real achievement during this age of conquest and prosperity was his participation in a period Imperial historians call "the Drive to the Frontiers".[1a]
His most notable campaigns include the conquest and subjugation of the lands of the Jutonsryk, the Kingdom of the Jutones, integrating their tribal territory into the Empire and renaming it the Barony of Westerland, appointing the subjugated Jutone King as the new Elector Count.[1a].
His exploits also include his campaign to cross the Grey Mountains and create the "West Mark" on the Bretonnian side of the mountains, and his invasion of the southern lands of the Border Princes (then a wild, tribal region) to found the province of Lichtenberg, building a series of castles to protect the Empire's southeastern flank. Such were his achievements that many within the Empire knew him as "The Conqueror" and he was proclaimed the greatest Emperor since the reign of Sigmar himself. After his death, his son Siegfried the Lawgiver took the throne in 557 IC, and would later become the new Emperor.[1a]