- As strategos of the Achaeans, the Greek general Philopoemen is responsible for turning the Achaean League into an aggressive military power. He builds up the League's military capability. The Achaean League's army and cavalry under Philopoemen then defeat the Aetolians on the Elean frontier.
- Mete Khan inherits Teoman's Hun confederations and founds the Xiongnu Empire. The beginning of his rule is accepted as the formation of the first systematic Turkic army. Mete's forces push into Northern China, threatening the Han Empire and forcing them to further fortify the Great Wall.