A Chill in the Air: An Italian War Diary, 1939-1940 (New York Review Books Classic by Iris Origo:
My first air raid last night. The sirens began just after midnight; I was still awake and was joined by William Phillips. We sat talking pleasantly in the dark for about one hour, heard one distant burst of fire and then the all-clear signal. Altogether a singularly unalarming experience, except apparently to the lions in the Zoo, who went on roaring all night, But, as the first wail of the sirens was heard, my thoughts went to England and France.