Duke of Saxony (912–36) and King of Germany (919–36). He was elected king by the Franks and Saxons in 919 and was the first king of the Ottonian dynasty. He developed a system of fortified defences against Hungarian invaders whom he defeated in 933 at the Battle of the Riade. Despite challenges from the nobility, he laid a strong foundation for his son Otto I.
Subjects: Military History.