Le Hoan

After the assassination of Dinh Tien Hoang, Le Hoan was proclaimed emperor by the army and court officials. He founded the Former Le dynasty, taking the reign name Le Dai Hanh. His rule stabilized the country and continued the work of unifying Vietnam.

Le Hoan, as commander of the Vietnamese army, defeated a Song Chinese invasion force at the Battle of Bach Dang River. He used a strategy of placing iron-tipped stakes in the riverbed to impale enemy ships. The victory secured Vietnamese independence and established his legitimacy.

Le Hoan launched a military campaign against the Champa kingdom to the south, sacking the Cham capital of Indrapura. The campaign expanded Vietnamese territory and secured the southern border. It also forced Champa to become a tributary state.