Sylvester Stallone had an incredible year in 1985 with his Rocky and Rambo sequels, which achieved an almost impossible $600 million box-office feat. Stallone had once been touted as the next Marlon Brando, following the success of Rocky. Unfortunately, Stallone had trouble achieving success outside of the Rocky movie franchise, while his first time playing Rambo in 1982's First Blood would send his career down a different path. As Stallone explained in Netflix's Arnold documentary, First Blood led to a new breed of action movies where the focus became the lead actor's body and less on dialogue or exposition.

https://screenrant.com/rocky-rambo-sequels-sylvester-stallone-1985-record-box-office-gross/