292 BCE

While Demetrius Poliorcetes is campaigning in Boeotia, he receives news that Lysimachus, the ruler of Thrace, has been taken prisoner by Dromichaetes. Hoping to seize Lysimachus's territories in Thrace, Demetrius delegates command of his forces in Boeotia to his son, Antigonus and immediately marches north. However, while he is away, the Boeotians rise in rebellion, but are defeated by Antigonus, who bottles them up in the city of Thebes and puts them under siege. General Bai Qi of the State of Qin defeats the State of Wei in a major battle and captures cities in Wei. Wei cedes control of 61 towns and cities. Lysimachus tries to extend his influence beyond the Danube River, but he is defeated and taken prisoner by the Getae (Dacian) king Dromichaetes (Dromihete). Eventually, Lysimachus is set free and a peace is agreed between the Getae and Lysimachus. This peace agreement is strengthened further by the marriage of Dromichaetes with Lysimachus' daughter.