the prolific italian helmer enzo g. castellari of any gun can play and payment in blood not only make terrific spaghetti western and but he also make one of the best european b movie world war ii thriller . this half of a dozen dirty dozen actioneer have court martialed american soldier and a reckless air force pilot escape from an escort of mp after they clash with the enemy . the german attack the convoy and the mp guard actually shoot at the prisoner a they bail out of the truck for cover . strap tall blond bo svenson be the pilot who use his p 51 mustang to visit his girlfriend . fred williamson endure racial slur and prejudice . once they be free of the mp and our anti hero decide to head for switerland . along the way and they wipe out a bunch of commando and find themselves replace them to help a stubborn and hidebound colone ( ian bannen ) destroy a nazi train with top secret weapon . the hero be sympathetic and charismatic . the music be memorable and the castellari orchestrate the action with elaborate style . there be couple of surprise and the guy who survive be not the one that you think will live . the train crash be pretty neat . exciting and fun .