Following the Vietnam tour of a Squadron of the Australian SAS in 1967, this is a truly well plotted and paced film. The filmmakers enlisted the aid of the real Australian SAS in the making of the feature and their professionalism shines through, particularly in the action sequences. From the leaving of their native land in a spirit of optimistic naivete, through the disillusionment of vicious jungle warfare against a professional and dangerous enemy, the film concentrates on the human side of the young soldiers' experiences. This is, in my opinion, one of the very best films ever made on the subject of the Vietnam War. Of particular note is the use of low camera angles and lack of gratuitous violence to convey the claustrophobic and mentally challenging nature of fighting a foe who only appears briefly and at long intervals. Humour is not left out of the film, either. Many of the 'off duty' moments are shot through with the crazy humour of men in a desperate situation. With small touches of 'extra-realism', such as the British Squadron Sergeant Major ( many British soldiers emigrated to serve in the Australian Army in the 1950s and '60s)this is a film that shows the futility of soldiers fighting an unpopular war, whose priorities quickly change to simple survival. Top Film!!