And on the home front, you'd have air-raid shelters that would be effective.
Darling, how can you be so sensible as to think of that sort of thing in the middle of an air-raid?
One night I reached Paris simultaneously with an air-raid warning.
You look about as 'appy as 'Earty does when 'e 'ears there's goin' to be an air-raid.
"I must institute a proper drill for air-raid ...