During the incursion of the Hungarians and the siege of Augsburg (955), he sustained the courage of the citizens, compelled the Hungarians to withdraw, and contributed much to the decisive victory on the Lechfeld (955).
Ungarlaste sissetungi ja Augsburgi piiramise (955) ajal julgustas ta kodanike vaprust, sundis ungarlased taanduma ja aitas palju kaasa otsustavale võidule Lechfeldis (955).