>>510300951A 1995 demographic study in Population and Development Review calculated 791,000–1,141,000 war-related Vietnamese deaths, both soldiers and civilians, for all of Vietnam from 1965 to 1975. The study came up with a most likely Vietnamese death toll of 882,000, which included 655,000 adult males (above 15 years of age), 143,000 adult females, and 84,000 children. Those totals include only Vietnamese deaths, and do not include American and other allied military deaths which amounted to about 64,000.
Also worth mentioning that France fought and lost the first Indo-China war prior to US’ involvement. I realize this is just a dick measuring contest here; but war is obviously far more complicated than numbers anyway. Not to mention wars wherein the fronts are on the opposite side of the planet.