Ultimate soldier. Ultimate mission. But will the SAS survive a nightmare journey into the tunnel lair of the Viet Cong? June 1966: 3 Squadron SAS (Australian Special Air Service) set up a Forward Operating Base in Vietnam's Phuoc Tuy province, a swampy hell of jungle and paddy-fields forty-five miles east of Saigon in the heart of enemy territory. The Viet Cong have bases throughout the jungle, and the Australians soon find themselves under...