No Stunt Double: Arnold Schwarzenegger performe0d many of his own stunts, as producers found it difficult to find a stunt double for the bodybuilder. The actor suffered a dislocated shoulder and several stitches during the shoot.
Stillborn Franchise: In 1986, a sequel was written by Steven E. de Souza, and revised by Frank Darabont, with an eye to having John McTiernan direct. The plot of the abandoned sequel would had seen Matrix being hired by a big corporation to oversee their security to protect their executives from being kidnapped. To stop people breaking into their building and to make sure their computers are secure. So he sets it up and hires the most dangerous people to be guards in the building and then lo and behold - he discovers the people he's working for are in the illegal arms business and the big corporation is a simply a front. The end of the movie would see Jenny and Cindy, who is now a lawyer, trapped in the building and Matrix now has to defeat all the people he hired - all the meanest, toughest guards - as well as the security systems, the guard dogs, everything. Arnold Schwarzenegger wasn't interested, and the sequel became Die Hard. Although de Souza has denied this.
Technology Marches On: Matrix's daughter would have been dead within seconds of him being spotted by Sully at the mall if this film was set in the late 1990s. Also Matrix could've called General Kirby on a cellphone once he got off the plane.
Visible Boom Mic: Seen in the reflection of a car window when Bennett's vehicle drives away after dropping off Matrix at the airportnote In other words, after Arnold utters, "I'll be back.", along with the reflection of the boom operator in a lavender shirt.
Jeph Loeb originally wrote the script with the intention of having Gene Simmons play Matrix, but Simmons passed on it early in the developmental stage. Loeb then rewrote the script with Nick Nolte in mind as an out-of-condition former Commando. The storyline was to concern a special forces agent working in the Middle East who becomes sick of the continuous death and destruction. He leaves Israel, returns to the United States and retires, but he is then forced out of retirement after the kidnapping of his daughter.
The final fight between Matrix and Bennett was supposed to take place on an island that was in the middle of a naval exercise between the USMC and the USN (actually referenced by the radio chatter when Matrix steals the seaplane). Unfortunately, the film used up its special effects budget killing hundreds of mooks.
Trivia entries for the Commando comic book series:
Keep Circulating the Tapes: Averted... kind of. Not only has D.C. Thomson & Co. started putting out oversized trade paperbacks of some of classic stories, but every month they usually have at least four stories that are reprints of stories that are at least a few decades old.