Before large forces hit the combat zone, the Malaysian Army's special forces unit Grup Gerak Khas are the first men on the ground behind enemy lines. The GGK gained fame and recognition worldwide after successfully assaulting communist rebels in the 1960s, fought deep in the Malaysian jungles. Toughened by one of the world's most difficult training regimes, GGK commandos are experts in unconventional warfare, including sabotage, counter-terrorism and intelligence gathering. But what makes them stand out is their ability to fight and survive in the world's most extreme jungles. We go deep into one of the most elite strike forces and follow their 13-week selection course from hell. To earn the coveted Green Beret, recruits must go through three months relentless physical and psychological torture that will push them to their absolute limits, and break all but the best.