The Combat Application Tourniquet. (C-A-T.) (Patent Pending) is a small and lightweight one-handed tourniquet that completely occludes arterial blood flow in an extremity. The C-A-T. uses a Self-Adhering Band and a Friction Adaptor Buckle to fit a wide range of extremities combined with a one-handed windlass system. The windlass uses a free moving internal band to provide true circumferential pressure to an extremity. The windlass is then locked in place; this requires only one hand, with the Windlass Clip”. The C-A-T. also has a Hook-and-Loop Windlass Strap” for further securing of the windlass during patient transport.