The first sentence of the film is a false claim
The Iran-Iraq war is thought to be the longest conventional war of the twentieth century, lasting from 1980 to 1988.
There are two ways of determine the length of the Vietnam war. The traditional one is start with the deployment of US troops in 1965. But nowadays the US government has pushed back the start of the war to 1955. So that's 10 or 20 years respectively; either way the Vietnam war lasted longer than the Iran-Iraq war.
Now some would argue that the Vietnam war wasn't a conventional war (hence the inclusion of that term in the film's claim), rather a proxy war. But that is just playing a semantic game. Considering that the US had more than half a million boots on the ground, the proxy war argument doesn't hold up. share