missing liner and chinstrap, 1 piece gladiator, The RLB (Reichsluftschutzbund) was an official national organization tasked with all aspects of civil air raid defence. On 26 September 1938 a specific helmet for RLB (Reichsluftschutzbund) personnel was introduced that incorporated a raised horizontal bead between the visors and crown. These helmets were commonly called the "Gladiator" style helmet..