During World War II the Italian city of Naples suffered approximately 200 air raids by the Allies from 1940 to 1944; only Milan was attacked more frequently. Almost all of the attacks — a total of 181 — were launched in the first nine months of 1943 before the Four days of Naples and the Allied occupation of the city at the beginning of October. Estimates of civilian casualties vary between 20,000 and 25,000 killed.[1][2]