He was a subordinate general of
Khúc Hạo in the area of Aizhou (now
Thanh Hóa Province). In
931, Dương Đình Nghệ defeated
Southern Han ruler Li Tian, retook the capital of
Đại La (former name of Hanoi), proclaimed himself Jiedushi (equivalent to Military governor) of
Tĩnh Hải quân. Dương Tam Kha became a subordinate general of his father. Six years later, Kiều Công Tiễn, also a general of Dương Đình Nghệ, mutinied and killed his master in order to become governor of Jinghao. In 938, Ngô Quyền, son-in-law and also former general of Dương Đình Nghệ defeated the potency of Kiều Công Tiễn and also killed him. After that, Dương Tam Kha follow Ngô Quyền as his general. As the Ngô Quyền march his forces to Đại La, Kiều Công Tiễn sent the envoys to Southern Han to petition for sending army to help himself. Emperor of Southern Han,
Liu Yan, commissioned his son,
Liu Hongcao to help Kiều Công Tiễn, he also led another army to supply his son. But Công Tiễn was executed before this army arrived. In the November 938, at the
Battle of Bạch Đằng, the fleet was defeated by Ngô Quyền, Liu Hongcao was killed in battle. Dương Tam Kha participated in this battle. ==Mutiny and accession==