Diên Biên Phu (1980)

Rules in French only .
Book with very short historical events presentation (1 page) plus 6 pages of rules plus 1 page with orders of battle.
The turn represent 2 days.
Game includes a big fold-able mapboard representing the battlefield and die-cut counters.

From the advertisement insert/game list for Jeux Descartes found within the boxed game:

Dien Bien Phu, the final battle of the war in Indochina. The French forces are surrounded by the Viet-Minh army. The outcome of the battle will be deadly. This war game almost puts us in the actual conditions of the battle. Can you change the course of history and defeat the Viet-Minh? A well balanced game that is accessible to all war game fans, even amateurs.