 Much of his body, arms, legs, torso, even the palms of his hands, were covered with scars from knife wounds from those fights.Fairbairn later created, organised, and trained a special anti-riot squad for the Shanghai police force.He also developed numerous firearms training courses and police equipment, including a special metal-lined bulletproof vest designed to stop high-velocity bullets from the 7.63x25mm Mauser pistol.