bn:01124525n
Noun Concept
Categories: United Kingdom home front during World War II, Defensive tactics, Civil defense
EN
blackout  Blackout drill  Blackout drills
EN
A blackout during war, or in preparation for an expected war, is the practice of collectively minimizing outdoor light, including upwardly directed light. Wikipedia
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EN
A blackout during war, or in preparation for an expected war, is the practice of collectively minimizing outdoor light, including upwardly directed light. Wikipedia
The practice of minimizing outdoor lighting for protection from attack Wikipedia Disambiguation
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