A great film, bit hard to find though...
Section 317
Prolly the original Viet Nam movie. Made in 62-63 in Cambodia.
Director Pierre Schoerndorfer survived Dien Bien Phu. He was a French army combat journalist/photographer. Several years ago he returned to Indochina and made "Dien Bien Phu". Which is pretty good if you can find a copy. Never hit theaters here.