Judging by the overall look of this, it would appear that Antonio Margheriti was given a bigger than usual budget to play with for this follow up to his earlier Codename: Wildgeese.
Although not a direct sequel, the two films share many of the same cast members from the earlier picture including Lewis Collins, Klaus Kinski and Luciano Pigozzi (in different roles)
Well, I've got to say straight away that the ostensible extra budget really shows in the special effects department in this with some absolutely superb explosive sequences involving Margheriti's trademark miniature work, most notably during the opening sequence wherein a dam is detonated and even more spectacularly later on when a passenger aircraft is blown up as it comes in to land....awesome stuff!
Regretfully, I must also say that the action scenes, such as those mentioned are sadly far too infrequent with the 'filling' in between them proving to be somewhat less than engaging in comparison.
The performances are all fine with Kinski especially on typically snide and evil top form. Also of note is the soundtrack by the legendary Ennio Morricone which really lifts the action sequences up yet another notch.
Overall then, whilst this may certainly represent one of, if not the pinnacle of Margheriti's work visually (and possibly budgetary), for me at least, this is most certainly not the directors best effort in the genre. That accolade would, in my humble opinion, go to the classic The Last Hunter for it's sheer entertainment value.