After the rebellion of Duke Liudolf, son of King Otto I, in 954, the king bestowed the ducal title on his nephew-in-law Burchard at a general council at Arnstadt. Burchard was an intimate of Otto and his queen, Adelaide of Italy. He was often at the royal court and he accompanied Otto on his campaign against the Magyars and was present at the great Battle of the Lechfeld on 10 August 955.Шаблон:Sfn
In 965, Burchard led a third campaign against Berengar II in Italy. At the Battle of the Po on 25 June, he defeated Berengar's son, Adalbert, and restored Italy to Ottonian control,Шаблон:Sfn even the south Italian principalities were brought to heel by 972. In 973, he died and was buried in the chapel of Saint Erasmus in the monastery on Reichenau Island in Lake Constance. He was succeeded by Otto, son of Liudolf.Шаблон:Sfn
Marriage & issue
In Saxony, he married a member of the Immedinger family. From this marriage came two sons:
His second marriage was to Hedwig, daughter of Henry I, Duke of Bavaria.Шаблон:Sfn Burchard built the great fortress atop the Hohentwiel, and Hedwig was the foundress of the monastery of St. George there, but their marriage remained childless.