Note
translated from the German

Translation
Light is the best target for a bomb. So remember to black out completely! It has been noticed that enemy pilots almost exclusively attack at night in the western zone, and that they randomly bomb areas where light can be detected. Therefore, it is the duty of each and every one to black out drastically, in the interest of oneself and the entire People, who are to be protected from every danger coming from above. Extremely important in the border zone, this is also true for our own territory. There, too, everything that could be seen as a target for a bomb during the nightly attacks of the enemy should be avoided. Published by the headquarters of the 'Reichsluftschutzbund', Berlin [printed by] Waldheim-Eberle, Vienna