("Invasion of Sicily" redirects here. For the Athenian offensive in the Second Peloponnesian War, see Sicilian Expedition.) The Allied invasion of Sicily, codenamed Operation Husky, was a major campaign of World War II, in which the Allies took the island of Sicily from the Axis powers (Italy and Nazi Germany). It was a large amphibious and airborne operation, followed by a six-week land campaign and was the beginning of the Italian Campaign.