- Actor Allusion: This isn't the first time Steven Berkoff plays a Big Bad of a Big Bad Duumvirate who is a Soviet officer who is conducting a clandestine covert operation presumably without knowledge of the Soviet government in an installment of an iconic action movie franchise based off a book or book series.
- California Doubling: The film was entirely shot in Mexico, doubling for Thailand and Vietnam.
- Completely Different Title: In Germany, the film was released as Rambo II - Der Auftrag ("Rambo II - The Assignment"). Similarly, in Brazil it's Rambo II: A Missão ("Rambo II: The Mission"), with the subtitle becoming the country's equivalent of Electric Boogaloo.
- Creator Backlash: Sylvester Stallone named this as the worst in the series, thinking it was too cartoonish.
- Fake Nationality: British Steven Berkoff playing a Russian, although, as stated above, this wasn't the first time.
- In Memoriam: The film is dedicated to stuntman Cliff Wenger Jr., who was accidentally killed by one of the film explosions.
- Name's the Same: Marshall Murdock. The film was made at the same time a famous tv-show also about veterans of the Vietnam war was running that also had a character named Murdock; the writers probably named Marshall Murdock after him. In addition, Charles Napier, who played the Marshall in Rambo, even appeared on The A-Team twice.
- Real-Life Relative: Sylvester Stallone's brother Frank performed the theme song.
- Unintentional Period Piece: The film showcases the resurgence of militarism and anticommunism in the early Reagan years. The Vietnam War is no longer something to be ashamed of (this was a year before Oliver Stone's Platoon) and the American soldiers are heroes and victims, not nutbags and baby killers as in The '70s. Rambo's rescue of the enslaved servicemen left behind - actually an Urban Legend that the film popularized - serves as a proxy way for America to win the war retroactively. It's been said that Rambo II was the movie America needed to watch to finally get over Vietnam.
- What Could Have Been:
- Dolph Lundgren was initially signed as the Russian Lt. Col. Podovsky when Sylvester Stallone realized that it was the same man who was going to be in Rocky IV so they paid off the contract.
- James Cameron's original screenplay began with Col. Trautman finding Rambo in a psychiatric hospital instead of a prison. The psychiatric hospital concept was instead depicted in Terminator 2: Judgment Day.
- The producers considered teaming up Rambo with John Travolta (who was once considered to play Rambo himself in the first film) as his young partner in rescuing the American POWs. Stallone nixed this idea when he decided it would be better to make the film a solo project.
- Lee Marvin was originally to play Marshall Murdock but changed his mind.
- Working Title: First Blood II.
- Issue #41 of Fangoria magazine (January,1985) indicated that the first draft of the script was simply titled Second Blood.
Trivia / Rambo: First Blood Part II