After the August Revolution of 1945, Quang Dũng joined Vietnam People's Army and became the journalist of "Chiến đấu" (Fighting) Newspaper.
Later, Quang Dũng took part in the offensive campaigns of the Tây Tiến regiment at north-western Vietnam and at the border regions of Laos.
During these times Quang Dũng produced many literature works, including poems, short stories, drama screenplays.
The famous poem Tây Tiến was written when Quang Dũng participated in the Military Congress of 3rd Inter-region at Phù Lưu Chanh village (Hà Nam).
Later, following the Đổi Mới reforms of 1986, the Vietnamese government and Communist Party began to re-evaluate and rehabilitate the formerly mistreated writers and artists.