Rambo's (blow)back

Just finished shooting (pun clearly intended) on the border of Burma, Rambo is back in the news. Already, a trailer for his new movie has been up for a while. (Tagline--when you're pushed, killing's as easy as breathing.) What I never knew until a friend mentioned it at a party, is that in Rambo III, he's fighting against the Soviets in Afghanistan alongside the Mujahideen! Some choice dialogue, courtesy of IMDB:

Masoud, Afghan Mujahedeen Leader: Now you see how it is here. Somewhere in the war there's supposed to be honor. Where's the honor here? Where? Now, we're taking the survivors to the border. Are you coming?
Rambo: I'm going to the fort.
Masoud, Afghan Mujahedeen Leader: Have you not seen enough death? Go! Go while you can! This isn't your war.
Rambo: It is now.
Masoud, Afghan Mujahedeen Leader: So be it. You're a good friend.

..

Mousa: This is Afghanistan... Alexander the Great try to conquer this country... then Genghis Khan, then the British. Now Russia. But Afghan people fight hard, they never be defeated. Ancient enemy make prayer about these people... you wish to hear?
Rambo: Um-hum.
Mousa: Very good. It says, 'May God deliver us from the venom of the Cobra, teeth of the tiger, and the vengeance of the Afghan.' Understand what this means?
Rambo: That you guys don't take any shit?
Mousa: Yes... something like this.