938

By place

Europe

• Summer - The Hungarian army invades Northern Italy with the permission of King Hugh of Arles. They cross the Apennines, and sack the Lombard lands in Tuscany, Lazio and Campania. Finally, the Hungarians are defeated at Wolfenbüttel by a Saxon army.
• July - King Otto I besieges the fortress of Eresburg. He defeats his half-brother Thankmar and kills him as he tries to find sanctuary. Eberhard III, duke of Franconia, is banished and replaced by his uncle Berthold.
• Fall - Otto I defeats in two campaigns a series of uprisings in Saxony, Franconia and Lotharingia. He signs a "friendship pact" with King Louis IV of the West Frankish Kingdom.

  Asia

• Battle of Bach Dang: Vietnamese forces defeat an invading force of the Southern Han state at the Bach Dang River. This put an end to Chinese imperial domination in Vietnam after nearly 1,000 years.
• The Sixteen Prefectures, which includes the area around modern-day Beijing, are absorbed in the Khitan Empire.