In July 1974, artist Ngô Viễn Chí was stationed with Đ814 Unit. The unit was a combination of Unit 81 and Unit
Ammunition, medicine, rice and military equipment was brought by road and then ferried on the river to Unit Đ814. Wounded soldiers were taken from Đ814 to hospitals like “K50” on the return trip.
Transporting goods, supplies and troops successfully during theproved to be a major factor for the People’s Army of Vietnam ( ) and the (NLF). Without the use of substantial air force resources, troops needed to utilise land routes to move the length of the country. They largely used the .