The Vietnamese film “The Legend Makers” (Những người viết huyền thoại, 2013) is inspired by real historical events from the Vietnam War, but it is not a direct true story about specific individuals.
The movie centers on Colonel Đinh Hòa and a group of soldiers who build and protect a secret petroleum pipeline running from northern Vietnam through the Trường Sơn (Annamite) mountains to the southern battlefields.
This storyline is based on the real Trường Sơn petroleum pipeline system, a massive wartime engineering achievement created by the Vietnamese army in the late 1960s and early 1970s.
The film dramatizes the hardships, dangers, and sacrifices of the soldiers and engineers who worked on this project.
So, while the characters are fictionalized, the pipeline project and wartime setting are based on true history.