Welcome to the Cardboard Tube Fighting League (CTFL). The CTFL was created out of a desperate need to better train and arm citizens with cardboard tubes. While many speculate that our forefathers, when drafting the constitution, originally intended the second amendment to refer to firearms, there is now a small group of non-academics who believe that they were more likely referring to elite militias of cardboard tube wielding ninjas. While training often takes place during childhood, the art is discarded by adults who are ignorant of its cultural value. The goal of the CTFL is to provide organized cardboard tube based events that help spread cardboard awareness. Among these pages you will find information, history, and event listings for duels around the world.