The Air Protection Warning Service (Luftschutzwarndienst-LSW) was a civilian organization whose purpose it was to alert the population of impeding air raid attacks.  In fulfilling this role, members were required to interpret various communication reports regarding bomber formations flying over Germany, operate search lights, observe bomber formations, help keep order among civilians affected by bombing raids, and to utilize air raid sirens before and after attacks.  Members of the Luftshutzwarndienst (Luftschutz) were typically volunteers assembled into area units within cities and towns that held the highest risk of being bombed.  Many population centers were divided into "blocks" with unit leaders assigned to each individual section of a city.  Volunteer teams were expected to rotate shifts and sleep in large concrete bunkers that held all previous and amenities of a regular fortification.  These also included the immense "flak towers" built around German cities upon which anti-aircraft batteries were stationed.ON THE INSIDE REAR PART OF THE HELMET, THERE IS SEVERAL LINES OF DECAL DESCRIPTION.  IT IS A SIZE 57 AND STAMPED IN METAL THAT READS: RL2-38/28.  THERE ARE SCUFF MARKS AND PAINT MARKS THROUGHOUT THE HELMET.  OVERALL THE HELMET IS IN PRETTY GOOD CONDITION.