Cambodian–Vietnamese War
During the Ho Chi Minh Campaign, it was 3rd Corps that advanced through the maritime regions of Phú Yên, Khánh Hòa Province and later captured Tan Son Nhat Airport. After the Vietnam War, 3rd Corps continued to engage in the Cambodian–Vietnamese War, the corps was awarded the title Hero of the People's Armed Forces ("Anh hùng Lực lượng vũ trang nhân dân") in 1979.