This Turkish-Italian coproduction features two major Turkish stars of the era alongside two American musclemen who'd become stars in peplum (then spaghetti westerns, and other Italian exploitation vogues). Considering that Richard Harrison and Gordon Mitchell were still in great shape at this point, it seems surprising that only the latter gets to strut his shirtless stuff in a fight scene in a Turkish bath (which turns into a footchase in which miraculously the two men's waist towels never fall off).
The basic revenge plot is nothing interesting, with the other three leads called in after 25 minutes or so to avenge their old military buddy Irfan Atasoy's murdered wife and son, and though there's a lot of action (fists/shootouts), it's not particularly inventive or well-staged. (There's also some sexploitation, pretty mild but still about as far as Turkish cinema was willing to go at the time.) Nor do the game actors get anything interesting in the way of character writing to play. The film is energetic but kind of generic, with little sense of humor or style.
No doubt this film wasn't aided by being seen in a poor online VHS dupe, but it really doesn't look like it was anything special visually or in production values to begin with. The occasionally cheesy effect of the dubbed English dialogue seems pretty appropriate for the whole enterprise. Anyway, this is a fun obscurity for fans of the main actors, but don't expect it to be a forgotten career highlight for them, or for anyone else involved.