Hero movie with traumatic torture scenes and sex

[bmfan]

I saw this movie in the early 90s but it is probably older than that. I still remember it with some friends. Its very low bugdet effects made us laugh big time.

- Hero movie (rambo-ish)
- At one scene he bangs a blonde and a brunette.
- Hero's friends are captured and tortured:
   *  One is buried up to his neck and acid is spilled on his face (yuk)
   * Hero is buried alive and saved by dog (!)
   * A fat one gets raped. (!!)

- One guy covers a grenade with his body to save the hero (the cut and the dummy are hilarious).

Please help me finding the name of this masterpiece.

Thanks

[JPickettIII]

How about this -

Commander - Last American Soldier

http://www.imdb.com/title/tt0166145/