David Morrell's novel 'First Blood', which the movie is based on, is published, introducing the character John Rambo and the story that would inspire the film.
The film 'First Blood' starring Sylvester Stallone as John Rambo is released, marking the first installment in the Rambo franchise and becoming a significant action movie of the 1980s.
Sylvester Stallone is cast in the lead role of John Rambo, solidifying his status as a major action star and contributing to the film's success.