German air raids on London and other UK cities, 1940-41 (5)

I believe the answer is:

blitz

(Other definitions for blitz that I've seen before include "Attack suddenly" , "Sudden military attack" , "Intense (aerial) bombardment" , "Sustained bombing as in WWII" , "Sustained attack (from the air?)" .)

I've seen this clue in The Guardian.

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