Mạc Kính Điển attacked Thanh Hóa while another Mạc force entered Nghệ An; Trịnh Kiểm led elephants round Yên Mô to the estuary and routed the Mạc fleet, then used captured boats to surprise the Mạc army in Nghệ An.
Battle
Battle of Thần Phù
- 1557
- Southeast Asia