Lê Duẩn became a member of the Vietnamese Revolutionary Youth League in 1928. He cofounded the Indochina Communist Party in 1930. Lê Duẩn was imprisoned the next year. He was released six years later, in 1937. From 1937 to 1939 he advanced in the party hierarchy and at the "2nd National Congress", he joined its Central Committee. He was imprisoned again the following year for fomenting an uprising. After five years he was released, shortly after the 1945 August Revolution, in which the Indochinese Communist Party took power. Following his release, he became a trusted associate of Hồ Chí Minh, the lead figure of the party.