GCTO's personnel are chosen from the among the world's elite unconventional warfare teams, making the unit an elite within an elite profession. It is also the only international Special Forces unit in existence. Funded and trained to an unprecedented level, the men and women attached to GCTO are truly the world's best exponents of special warfare and counter-terrorism.

Answerable to no-one but a secret group of officials from several key nations and ungoverned by the criminal or military codes of any nation; GCTO is able to operate on any continent, and the operatives are able to use any means or methods in order to ensure that they succeed.

You are a GCTO "Twilight Warrior", a Special Forces soldier technically without rank or identity. Existing in the shadowy world of a secret counter-terrorist military unit, you are the embodiment of unconventional warfare. Having initially proven your exceptional skills as a member of your own nation's Special Forces team, you have been assigned to GCTO. Cross-trained in a variety of disciplines, including sniping, assassination, close combat, FIBUA (urban warfare), counter-terrorism, demolitions, sabotage and naval ops, you are proficient and deadly in all areas of special warfare. Trained to cope with the exigencies and extreme conditions of jungle, urban and naval warfare, there is no task you cannot complete, no area in the world in which you cannot successfully operate. Constantly on-call, 24 hours a day, you and the other members of GCTO can be fully operational in any hot-spot on the planet in under 15 hours.

Despite the obsessive secrecy and security which surrounds GCTO, rumours of its existence have filtered into underworld and terrorist circles. Although no-one has ever seen a GCTO unit in action - and lived to tell the tale - terrorists across the world continue to tell stories of mysterious black-clad units which materialise with phenomenal speed to efficiently dispense deadly justice.