What did they do when they heard the air raid siren go off in world war 2?

When the air raid siren went off during World War II, civilians typically sought immediate shelter to protect themselves from potential bombings. Many rushed to designated air raid shelters, basements, or underground facilities, while others may have used makeshift shelters in their homes. Some people also gathered emergency supplies and listened for updates on the situation via radio. The siren served as a critical warning, prompting quick action to ensure safety amidst the chaos.