Rambo: I want, what they want, and every other guy who came over here and spilled his guts and gave everything he had, wants!
For our country to love us as much as we love it! That's what I want!

At the end of the novel First Blood by David Morrel, John Rambo dies, which doesn't allow for sequels and ends on a dark note. The ending was changed in the movie, allowing for this sequel to be made.
Dolph Lundgren was initially signed as the Russian Lt. Col. Podovsky (played by Steven Berkoff) when Sylvester Stallone realized that it was the same man who was going to be in Rocky IV so so they paid off the contract.
Co-writer James Cameron claims that he only wrote the first draft of the sсript and that Sylvester Stallone made many changes to it.
When the film was released, the "political" content of the movie was considered controversial. Many felt the Vietnam conflict was "altered" to look and sound heroic.
Cameron commented that he only wrote the "action" and that Stallone wrote the "politics".
As Co Bao (Julia Nickson) died in Rambo's arms after the ambush, there was supposed to be a triple zoom-in while Sylvester Stallone screams "No!" echoed 3 times.
During a test screening, audience actually started laughing. It was quickly re-edited to the present form.
During a conversation with Co (Julia Nickson), Rambo says '...I am expendable'.
Twenty five years after the release of this film, Stallone directed an ensemble cast in a film titled 'The Expendables'.