Both Jean-Claude Van Damme and Dolph Lundgren attended the 1992 Cannes Film Festival in order to promote this film. Just outside the festival hall, Van Damme and Lundgren were shown having an argument, and then pushing and threatening each other before security guards intervened and stopped them. This brawl between the two became a talking point for the media and was reported on many news channels. However, years later, Lundgren revealed in an interview that it was all staged to garner publicity for this movie. Van Damme also confirmed this on a 2018 podcast.
The Vietnam scenes were filmed at the Kingman, Arizona golf course with set dressings and fake foliage.
Nearly all of the ice required for filming (an estimated 400kg) came from a local 7-Eleven in Arizona. Manager of that store Joaquim Alvarez was even invited on a tour of the Nugget Ice Corporation factory as his sales figures were so impressively high.
Tom Lister Jr. had his eyepiece custom made because the regular eye piece's design was blocking his good eye.
Jean-Claude Van Damme and Dolph Lundgren got along with each other during production and became friends.
Roland Emmerich: [44] Luc Deveraux's codename in the UNISOL program is GR44. The number 44 appears in other Emmerich films such as Moon 44: prisión espacial (1990), Día de la independencia (1996), and Godzilla (1998).