----
* BackedByThePentagon: Like many other Vietnam War movies shot in the Philippines, this series received assistance from the U.S. Armed Forces, who lent the military vehicles used in the movies.
* CaliforniaDoubling: Vietnam was played by the Philippines in the first (which was actually the second - see SequelFirst) and third films, and by Mexico and the ''Caribbean'' (specifically St. Kitt's) for the second/first.
* FatalMethodActing: During a production shoot on location in the Philippines for the third film, a Philippine Air Force helicopter hired by Creator/TheCannonGroup crashed into Manila Bay killing four Filipino soldiers and wounding five other people, including a member of the film crew.
* SequelFirst: ''Missing in Action 2: The Beginning'' was actually produced (under the title ''Battlerage'') before ''Missing in Action'', but Cannon decided the latter was a case of an EvenBetterSequel and released that one first. This is why the writing credits for the first film have a "Based on characters created by..." credit.

----