What does A.R.P stand for. WW2?

A.R.P. stands for Air Raid Precautions, a British civil defense organization established during World War II. Its primary purpose was to prepare and protect the civilian population from the dangers of aerial bombardment, particularly in the face of the Blitz. A.R.P. involved measures such as air raid shelters, blackouts, and public safety campaigns to ensure that citizens were informed and ready for potential attacks.