When Schanberg and Pran visit the city of Neak Leung (which had just been accidentally hit by a B-52 strike) a group of Cambodian National Army operatives rush into town in a jeep. The song "Band on the Run" by Paul McCartney and Wings is blaring, supposedly from a radio on the jeep. While the scene was to have taken place in May, 1973, the song "Band on the Run" was not released until 1974.
At the village of Neak Leung, a soldier is listening to Band on the Run by Wings. The accidental bombing of Neak Leung occurred in August 1973; the album Band on the Run was not released until October of that year.
When listening to the news on the radio in the French consulate, a bottle of Champagne and a glass are standing on the piano. In the next cut, the bottle and the glass are gone. Another journalist then brings both items to the piano again.
When Sydney and his team are taken into custody by the Khmer Rouge, their watches are confiscated along with their cameras and the contents of their bags. In the very next clip, Sydney is shown still wearing his watch.
The Vietnamese strike aircraft are American-made T-33 Shooting Star trainer jets. These were never in use by the Vietnamese People's Air Force, and none were known to have been sent to South Vietnam. Their use in the film, however, was necessitated as it was available from the Royal Thai Air Force, and the scenes were being shot in Thailand.
During the scenes depicting the Vietnamese invasion of Cambodia, the Vietnamese airplanes shown are American T-33s and the Vietnamese tanks are American M-47s, neither of which would have been in the Vietnamese inventory. They would, however, have been in the inventory of Thailand (Royal Thai Air Force and Royal Thai Army), where the exterior shots were filmed.