Htun Aung graduated from the 26th batch of the Defence Services Academy.

4 and commanded operations in Kayin State after the 2021 Myanmar coup d'état.

[3][2] During the Thein Sein and Aung San Suu Kyi administrations, he served as deputy minister for home affairs.

[4] In October 2022, he retired from the Burmese armed forces to become general secretary for the Union Solidarity and Development Party.

[3][4] He has been sanctioned by the governments of the European Union, Canada and the United States for human rights violations.