Passive air defence is defined by NATO as "Passive measures taken for the physical defence and protection of personnel, essential installations and equipment in order to minimize the effectiveness of air and/or missile attack". It remains a vital activity by ground forces and includes camouflage and concealment to avoid detection by reconnaissance and attacking aircraft. Measures such as camouflaging important buildings were common in the Second World War. During the Cold War the runways and taxiways of some airfields were painted green. COUNT 5
QSN1 What does NATO define as passive measures to protect people, buildings and equipment from air or missile attacks? ANS1 Passive air defence QSN2 Which group is heavily responsible for passive air defence? ANS2 ground forces QSN3 Passive air defence includes camouflage and what? ANS3 concealment QSN4 What was camouflaged during World War II? ANS4 important buildings QSN5 Some airfield runways were painted green during what war? ANS5 the Cold War